MASLD, formerly known as non-alcoholic fatty liver disease, affects roughly a third of adults globally and begins silently as fat accumulates inside liver cells. If unchecked, the condition can progress to inflammation, fibrosis, and ultimately cirrhosis or liver cancer. Because the disease is driven by diet and metabolic imbalance rather than a single pathogen, prevention has become the central strategic goal. The Yanbian University group, led by corresponding authors Haidan Yuan and Guangchun Piao, argued that botanical resources with documented health benefits could serve as accessible prophylactic agents, and P. longifolia, a common edible vegetable in Inner Mongolia historically recognized in northeastern China for its health-promoting properties, was an obvious candidate to test.

The investigation began with a rigorous chemical census. Using ultra-high-performance liquid chromatography coupled to quadrupole-orbitrap mass spectrometry, or UHPLC-QE-MS, the researchers characterized 25 major bioactive constituents in the plant. This chemical blueprint served as the foundation for everything that followed. Each identified compound was then fed into a network pharmacology analysis, a computational strategy that maps interactions between bioactive molecules, their protein targets, and disease pathways. Rather than attributing an effect to one magic bullet, network pharmacology embraces the multi-component, multi-target logic that underlies most botanical interventions, and it allowed the team to predict which signaling hubs the plant’s constituents were most likely to engage.

To move from prediction to measurement, the researchers performed untargeted metabolomics on both serum and liver tissue from experimental animals. Metabolic profiling identified 18 differential metabolites in serum and 15 in liver tissue, a pattern that converged on two primary regulatory hubs: the AMPK axis and the NF-κB axis. AMPK, or AMP-activated protein kinase, functions as the cell’s energy sensor, switching on fat oxidation and shutting down lipogenesis when cellular energy status shifts. NF-κB, by contrast, is a transcription factor that orchestrates inflammatory responses, and its chronic activation in the liver is a hallmark of progression from simple steatosis to steatohepatitis. The metabolomics data suggested that P. longifolia was engaging both hubs simultaneously.

Experimental validation followed in vivo and in vitro. Animals given a high-fat diet developed obesity, hepatic steatosis, and early hepatic injury, the classic triad of emerging MASLD. When the diet was paired with GYC intervention, the researchers found that the plant effectively prevented high-fat diet-induced obesity, fat accumulation in the liver, and the earliest signs of hepatic damage. The findings, published on 15 October 2026 as an open-access article carrying the DOI 10.1038/s41538-026-01193-9, demonstrated that the intervention maintained lipid homeostasis and tempered early hepatic inflammatory responses by activating the AMPK signaling axis while suppressing the NF-κB and MAPK pathways.

The mechanistic picture that emerges is one of coordinated metabolic and inflammatory control. By activating AMPK, the plant’s constituents appear to restore the liver’s lipid-handling equilibrium, promoting fatty acid oxidation and limiting de novo lipogenesis, the process by which excess carbohydrate is converted into stored fat. By suppressing NF-κB and the MAPK cascade, another signaling family that propagates inflammatory signals, the intervention dampens the cytokine-driven inflammation that converts benign fat accumulation into active liver disease. Metabolomics confirmed that these pathway shifts were mirrored by measurable changes in circulating and hepatic metabolites, linking molecular signaling to the systemic metabolic state.

What makes the study technically notable is its integrated design. Chemical profiling supplied the compound inventory, network pharmacology predicted the target landscape, and metabolomics measured the actual metabolic consequences, with in vivo and in vitro experiments closing the loop. This triangulation reduces the risk that a single method’s artifacts drive the conclusion. The convergence of 18 serum and 15 liver differential metabolites on the AMPK and NF-κB axes, predicted independently by network pharmacology, provides a robust scientific rationale for utilizing GYC as a functional food resource or a promising prophylactic agent for MASLD prevention.

The work also carries cultural and agricultural weight. P. longifolia is not an exotic rainforest remedy but a vegetable already eaten regularly in Inner Mongolia, meaning the gap between laboratory finding and dietary practice is unusually narrow. The researchers, based in the College of Pharmacy at Yanbian University and the Key Laboratory of Natural Medicines of the Changbai Mountain under the Ministry of Education, framed the plant as a botanical resource historically recognized in northeastern China for its health-promoting benefits, and their data now give that recognition a molecular footing. The study was supported by the Jilin Province Science and Technology Development Plan Project and the National Natural Science Foundation of China.

For the global food science community, the findings arrive at a moment when MASLD prevention is urgently sought and dietary intervention remains the most practical lever. A vegetable that activates the liver’s energy sensor and quiets its inflammatory circuits, consumed as food rather than as a pill, represents a compelling model for functional food design. The Yanbian University team’s work suggests that the answer to a modern metabolic epidemic may have been growing on the Inner Mongolian plateau all along, waiting for metabolomics to reveal its mechanism.

Subject of Research: Preventive mechanisms of Potentilla longifolia against MASLD based on chemical profiling, network pharmacology, and metabolomics

Article Title: Preventive mechanisms of Potentilla longifolia against MASLD based on chemical profiling, network pharmacology, and metabolomics

Article References: Lin, S., Zhang, L., Wang, Z., Li, J., Cui, H., Bao, F., Di, Y., Xu, C., Dai, T., Yuan, H., & Piao, G. (2026). Preventive mechanisms of Potentilla longifolia against MASLD based on chemical profiling, network pharmacology, and metabolomics. npj Science of Food. https://doi.org/10.1038/s41538-026-01193-9

Image Credits: AI Generated

DOI: 10.1038/s41538-026-01193-9

Keywords: Preventive, mechanisms, Potentilla, longifolia, against, MASLD, based, chemical, profiling, network, pharmacology, metabolomics

The team, led by Elahe Abedi, Seyed Mohammad Bagher Hashemi, and Shahrzad Maleki, built their approach around hydrolyzed brewer’s spent yeast from Saccharomyces cerevisiae. Using limited enzymatic hydrolysis with pepsin under acidic conditions, they produced a yeast hydrolysate rich in peptides, amino acids, soluble nitrogenous compounds, and minerals. They then functionalized this material in two distinct ways: thiolation, using 3-mercaptopropyltriethoxysilane to introduce reactive sulfhydryl groups, and amination, using 3-aminopropyltriethoxysilane to attach amino groups. These surface chemistries were chosen because reactive sulfhydryl and amino groups can influence protein interactions, redox balance, and enzymatic accessibility within a germinating seed.

To test the concept, the researchers surface-sterilized uniform barley seeds and germinated them for 96 hours at 30 degrees Celsius and 85 to 87 percent relative humidity. Four steeping regimes were compared: distilled water as a control, thiolated hydrolysate at 50 grams per liter, aminated hydrolysate at the same concentration, and a combined solution containing equal parts of both functionalized hydrolysates. Daily applications of 20 milliliters of the respective solution delivered the functional groups directly into the germination environment, and samples were collected at 0, 24, and 96 hours for a battery of physicochemical, structural, and biological analyses.

The starch results were striking. Ungerminated barley contained roughly 74 to 75 percent starch, but after 96 hours of germination the combined treatment had driven starch content down to 35.08 percent, compared with 48.75 percent for the water control. In vitro starch hydrolysis told the same story: the combined treatment reached approximately 40.5 percent hydrolysis after 96 hours, far exceeding the water control’s 19 percent. The rapidly digestible starch fraction climbed to about 52 percent under the combined treatment, while resistant starch fell to roughly 3 percent, indicating that the functionalized steeping media accelerated the enzymatic dismantling of the starch granule structure and shifted the digestibility profile toward faster glucose release.

Protein quality improved in parallel. In vitro protein digestibility rose from baseline values to 74.4 percent in the combined-treatment barley after 96 hours, compared with 47.4 percent for the water control. SDS-PAGE profiling revealed the underlying mechanism: high-molecular-weight storage proteins above 50 kilodaltons, including globulins, glutelins, and prolamins, were progressively degraded, while low-molecular-weight peptides in the 10 to 25 kilodalton range accumulated. Trypsin inhibitor activity, a key antinutritional factor, also fell more steeply in the functionalized treatments, dropping to 3.12 trypsin inhibitor units per milligram in the combined treatment versus 5.53 in the water control, further supporting the improved protein digestibility.

Scanning electron microscopy provided direct visual confirmation of these biochemical changes. After 96 hours, water-germinated barley retained large portions of an intact endosperm matrix, whereas grains treated with the combined hydrolysates displayed a highly porous, honeycomb-like architecture with extensively eroded starch granules and collapsed structures. The severity of structural disruption followed the same ranking as the biochemical data, with the combined treatment producing the most pronounced degradation. This morphological evidence links the physical disorganization of the grain matrix to the enhanced accessibility of starch and protein substrates to digestive enzymes.

Perhaps the most dramatic effects appeared in the phenolic and antioxidant measurements. Total phenolic content in the combined-treatment extract reached 5432 milligrams of gallic acid equivalents per liter after 96 hours, more than four times the initial value of 1170 and well above the 2034 achieved with water. DPPH radical-scavenging activity climbed to 94.3 percent under the combined treatment, and the strong correlation between phenolic content and antioxidant activity, with a correlation coefficient of 0.967, confirmed that phenolics were the dominant contributors. HPLC analysis showed that gallic acid alone surged to 3556.78 milligrams per liter in the combined treatment, while ferulic acid, sinapic acid, caffeic acid, and vanillin all rose substantially, and catechin appeared for the first time after 96 hours of germination.

The researchers attribute this phenolic enrichment to the activation of endogenous enzymes such as esterases, cellulases, beta-glucosidases, and phenylalanine ammonia-lyase, which cleave phenolic-carbohydrate and phenolic-protein complexes and drive new phenolic synthesis through the phenylpropanoid pathway. Controlled reactive oxygen species generated during germination likely act as signaling molecules that further stimulate the seed’s antioxidant defense systems. Proteolytic degradation of storage proteins may also contribute, since the resulting low-molecular-weight peptides can contain hydrophobic and aromatic residues capable of stabilizing free radicals. Notably, the treatments with the highest phenolic content also showed the highest starch hydrolysis, suggesting that the same enzymatic disruption of starch-flavonoid and protein-phenolic complexes simultaneously boosts digestibility and antioxidant release.

Microbial and biological safety assessments added an important practical dimension. Total microbial counts after 96 hours were dramatically lower in the functionalized treatments, at 2.7 and 2.1 log CFU per gram for the thiolated and combined treatments respectively, compared with 9.6 log CFU per gram for the water control, hinting at partial antimicrobial effects of the steeping-derived bioactive constituents. Cytotoxicity testing in Caco-2 intestinal cells showed that viability remained above 93 percent at the lowest tested concentration, and kinetic modeling of the viability data revealed a biphasic exponential decay pattern, with the water control showing the slowest decline and the thiolated treatment the fastest at higher concentrations. Hemolysis assays on human erythrocytes confirmed that all samples stayed below the 5 percent threshold generally accepted for blood-compatible materials, with maximum predicted hemolysis values between roughly 3.2 and 4.3 percent across all concentrations tested.

The study’s authors caution that the specific molecular mechanisms linking functionalized steeping media to these nutritional improvements were not directly measured, since amylase and protease activities were not quantified in this work, and they call for application optimization, further safety evaluation, and validation in real food systems. Nevertheless, the integrated evidence, spanning starch fractions, protein profiles, phenolic chemistry, microstructure, and biological compatibility, makes a compelling case that functionalized yeast hydrolysates can act as active germination environments rather than mere nutrient supplements. If the approach translates to industrial scale, brewers’ spent yeast, an abundant byproduct of the beer industry, could find a second life as a precision tool for upgrading the nutritional quality of sprouted grains, turning a low-value waste stream into a driver of functional food innovation.

Subject of Research: Effects of thiolated and aminated yeast hydrolysate steeping media on the nutritional quality and digestibility of germinated barley

Article Title: Effects of functionalized yeast hydrolysates as steeping media on nutritional properties and digestibility of germinated barley

Article References: Abedi, E., Hashemi, S. M. B., & Maleki, S. (2026). Effects of functionalized yeast hydrolysates as steeping media on nutritional properties and digestibility of germinated barley. Food Chemistry: X, Article 104617. https://doi.org/10.1016/j.fochx.2026.104617

Image Credits: AI Generated

DOI: 10.1016/j.fochx.2026.104617

Keywords: germinated barley, yeast hydrolysate, thiolation, amination, starch digestibility, protein digestibility, phenolic compounds, antioxidant activity, trypsin inhibitors, brewer's spent yeast, functional food, food chemistry

The strategy the researchers tested is known as agronomic biofortification, which involves enriching crops with trace elements during cultivation rather than relying on genetic modification or dietary supplements. Conventional biofortification typically applies selenium as selenate and iodine as iodide, either to the soil or directly onto foliage. The problem is that these ionic forms are notoriously inefficient. Iodide applied to soil leaches away quickly, volatilizes into the atmosphere, or gets locked up by soil minerals before roots can absorb it. Selenate competes with sulfate for uptake channels and can be lost through runoff. Foliar sprays improve retention, but the nutrients still sit vulnerably on the leaf surface, exposed to washing off in rain, photodegradation, and inconsistent penetration through the waxy cuticle. The result is inconsistent enrichment from one field, season, or even one application to the next, which makes it difficult to guarantee that a serving of spinach will actually deliver the promised dose of micronutrients.

Chitosan nanoparticles offer a way around these limitations. Chitosan is a biopolymer derived from chitin, the structural material found in crustacean shells, and it is biodegradable, biocompatible, and naturally antimicrobial. When engineered into nanoparticles, chitosan can complex with trace elements and act as a microscopic delivery vehicle. The positively charged amino groups on chitosan bind anions such as selenate and iodide, holding them in a stable reservoir that adheres well to leaf surfaces. Because the particles are nanoscale, they can navigate the stomata and cuticular pathways of leaves far more effectively than dissolved ions alone, promoting gradual uptake rather than rapid loss. The researchers hypothesized that this controlled-release behavior would not only raise the concentration of selenium and iodine in spinach leaves but also stabilize yields when growing conditions turn hostile, since chitosan itself is known to elicit plant defense responses and mild biostimulant effects.

To test this rigorously, the team conducted a field experiment using spinach cultivar Pawnie F1, laid out in a randomized complete block design, the gold standard for agricultural trials because it controls for spatial variation in soil and microclimate. Crucially, they repeated the experiment across three distinct growing seasons in 2025 on the North European Plain: spring, summer, and autumn. This multi-season design matters enormously, because most biofortification studies are conducted in a single season or in greenhouses, leaving open the question of whether results hold up under real-world variability. The comparison pitted conventional selenate and iodide salts against the same nutrients complexed with chitosan nanoparticles, applied as foliar treatments, with the dual selenium-iodine nanoparticle formulation as the centerpiece of the study.

The yield data told a story of seasonal stress and nanoscale resilience. Fresh biomass was highest in spring, reaching 1.62 kilograms per square meter, and lowest in summer, dropping to 1.17 kilograms per square meter, reflecting the heat and light stress that spinach, a cool-season crop, experiences in midsummer. What caught the researchers’ attention was what happened in the less favorable summer and autumn seasons: plots treated with chitosan nanoparticle formulations maintained more stable yields than those treated with ionic salts. This buffering effect suggests that the nanoparticles act not merely as passive nutrient carriers but as biostimulants, helping plants cope with suboptimal conditions. For farmers, this dual benefit, enrichment plus yield stability, could make nanoparticle biofortification economically attractive even before accounting for the reduced fertilizer inputs that higher efficiency implies.

On the enrichment side, both the conventional and nanoparticle treatments significantly increased selenium and iodine concentrations in spinach leaves, confirming that foliar biofortification works in principle. But the efficiency gap was decisive. Averaged across the three seasons, the chitosan-based formulations increased fertilization efficiency for selenium by approximately 41 percent and for iodine by approximately 34 percent relative to the ionic salt formulations. In practical terms, this means farmers could achieve the same nutritional enrichment with substantially less applied nutrient, reducing costs and minimizing the environmental losses that plague conventional fertilization. Importantly, applying selenium and iodine together via the nanoparticles did not reduce the uptake efficiency of either element, demonstrating that simultaneous dual biofortification is technically feasible, something that has been difficult to guarantee with ionic forms because of potential chemical interactions between the two trace elements.

To make sense of the complex dataset, the researchers employed principal component analysis, a statistical technique that condenses many correlated measurements into a few underlying axes of variation. The first principal component, accounting for 36.5 percent of the variability, was dominated by growing season, confirming that weather and photoperiod were the largest sources of variation in the experiment. The second component, explaining 27.5 percent, captured the biofortification effect itself. Within this statistical landscape, the chitosan nanoparticle treatments formed a distinct cluster associated with both higher yields and higher nutrient content, visually separating them from the ionic treatments and reinforcing the conclusion that the nanocarrier fundamentally changes how the crop responds to fertilization.

Food safety, of course, is the make-or-break question for any biofortification technology, and the study addressed it head-on. Spinach is a notorious accumulator of nitrates, which can be converted to nitrites and pose health risks, particularly for infants. The researchers measured nitrate and nitrite levels in the enriched leaves and found that all values remained within the limits set by European Union regulations, regardless of treatment. They then calculated the maximum single-day intake, or MSDI, of selenium and iodine for different consumer groups and confirmed that even the most enriched spinach was safe for all age groups, from children to adults. This dual safety verification, covering both antinutritional compounds and trace element intake, provides the evidence base regulators will need before nanoparticle-fortified crops can reach the market.

The implications stretch well beyond spinach. Micronutrient deficiency, sometimes called hidden hunger, affects an estimated two billion people worldwide, and staple-crop biofortification programs have made progress but often struggle with the same uptake inefficiencies that motivated this study. A biodegradable, shell-derived nanocarrier that boosts efficiency by a third or more while stabilizing yields under stress could be adapted to other leafy vegetables and trace elements, potentially transforming functional food production. The work was supported by Poland’s Implementation Doctorate 2024 program funded by the Ministry of Science and Higher Education, reflecting a deliberate push to move nanotechnology from the laboratory into agricultural practice. As the authors note, this is the first field-based, three-season evidence supporting chitosan nanoparticles for simultaneous selenium and iodine biofortification, and it arrives at a moment when climate volatility is making every advantage in crop resilience and nutrient delivery count. If follow-up studies in other regions and crops replicate these gains, the humble spinach leaf could become a far more powerful vehicle for public health than anyone imagined a decade ago.

Subject of Research: Chitosan nanoparticle-based foliar delivery of selenium and iodine for agronomic biofortification of spinach

Article Title: Nano-delivery of selenium and iodine improves spinach biofortification

Article References: Grochowska, E., Niemiec, M., Komorowska, M., Kula-Maximenko, M., Tan, S. H., Radwan-Pragłowska, J., Mirowski, K., & Gorczyca, A. (2026). Nano-delivery of selenium and iodine improves spinach biofortification. Applied Microbiology and Biotechnology. https://doi.org/10.1007/s00253-026-14073-9

Image Credits: AI Generated

DOI: 10.1007/s00253-026-14073-9

Keywords: chitosan nanoparticles, selenium, iodine, spinach, biofortification, foliar fertilization, micronutrient deficiency, functional food, nanobiotechnology, food safety, crop yield, plant biostimulants

The research, led by scientists at the Korea Research Institute of Bioscience and Biotechnology together with colleagues at Hanyang University ERICA and Dong-A University, set out to answer a deceptively simple question: how much of the plant’s nutritional and antioxidant value depends on when it is picked and where it is grown? To find out, the team cultivated G. affine under two different cultivation environments and sampled it at multiple growth stages, then subjected every sample to ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry, a technique abbreviated as UPLC-QTOF/MS. This platform allows researchers to detect and tentatively identify hundreds of small molecules in a single run, generating a chemical fingerprint of each sample that can be compared statistically across conditions.

In total, the team annotated fifty metabolites, and from that pool they isolated eight compounds through successive chromatographic separations, determining their structures using nuclear magnetic resonance spectroscopy and mass spectrometry. This is a crucial step that many metabolomics studies skip. Untargeted profiling can suggest what a compound might be, but only isolation and structural elucidation provide certainty about identity. By purifying these eight molecules, the researchers created their own reference standards, which they then used to build a targeted high-performance liquid chromatography method with diode-array detection, or HPLC-DAD, capable of precisely quantifying the most important constituents in any sample of the plant.

The analytical performance of that quantification method was rigorous. Calibration curves showed excellent linearity, with coefficients of determination of at least 0.999 across the tested ranges, and detection limits fell between 0.671 and 1.088 micrograms per milliliter. In practical terms, this means the method can reliably detect and measure even trace amounts of the key bioactive compounds, making it suitable for quality control in food and nutraceutical manufacturing, where batch-to-batch consistency is essential and regulatory standards demand validated analytical procedures.

To make sense of the enormous datasets generated by untargeted metabolomics, the researchers turned to chemometrics, the statistical analysis of chemical data. Principal component analysis, or PCA, provided an unbiased overview of the variation, and it revealed that the metabolite profiles of G. affine were shaped by both growth stage and cultivation environment. Samples clustered according to how mature the plants were and where they had been grown, indicating that these two factors leave distinct chemical signatures in the plant tissue. A second, supervised method, partial least squares discriminant analysis, or PLS-DA, sharpened the picture further, showing particularly clear separation between samples from the two cultivation environments. Supervised models like PLS-DA actively search for the variables that best distinguish predefined groups, so the strong discrimination confirmed that growing conditions exert a powerful and consistent influence on the plant’s secondary chemistry.

The compounds driving that discrimination belonged overwhelmingly to two chemical families: phenylpropanoids and flavonoids. Within these broad classes, three subgroups stood out as the main discriminatory metabolites. Caffeoylquinic acid derivatives, which arise when caffeic acid is esterified with quinic acid, are well-known phenolic compounds with documented antioxidant and anti-inflammatory activities in the food science literature. Quercetin glycosides and luteolin glycosides, meanwhile, are sugar-conjugated forms of two of the most studied plant flavonoids, molecules that plants typically produce as protective agents against ultraviolet radiation, herbivores, and oxidative stress. That these particular compounds dominated the statistical separation suggests that the plant’s defensive chemistry is highly sensitive to both its developmental program and its growing environment.

The functional consequences of these chemical shifts were confirmed by classical assays. The researchers measured total phenolic content and total flavonoid content across all samples, alongside antioxidant capacity tests. Both the phytochemical contents and the antioxidant activities varied significantly across growth stages and between the two cultivation environments, mirroring the metabolomic patterns. Most notably, samples grown in the open field showed increased phenolic contents and enhanced ABTS radical-scavenging activity at later growth stages under the conditions examined. The ABTS assay works by measuring a sample’s ability to neutralize a synthetic green-colored radical cation, providing a rapid proxy for antioxidant capacity. The finding that open-field plants became chemically richer as they matured is consistent with a well-established principle in plant physiology: environmental stresses such as full sunlight exposure tend to stimulate the phenylpropanoid and flavonoid pathways, prompting plants to accumulate protective phenolic compounds.

For the food and nutraceutical industries, these results carry immediate practical weight. G. affine is already consumed as a food and medicinal plant valued for its nutritional and bioactive properties, but like many botanical raw materials, its chemical quality can fluctuate dramatically depending on agronomic choices. The study demonstrates that harvest timing and cultivation system are not minor variables but primary determinants of the plant’s functional value. A processor seeking maximum phenolic content and antioxidant activity, for example, now has evidence-based guidance pointing toward open-field cultivation and later growth stages under the conditions tested. Conversely, the detailed metabolite maps allow manufacturers to verify that incoming plant material meets expected chemical specifications, using the validated HPLC-DAD method as a quality gate.

Scientifically, the work also illustrates the power of combining untargeted and targeted approaches. Untargeted metabolomics excels at discovery, revealing unexpected patterns and flagging candidate biomarkers, but it produces tentative identifications that require confirmation. By following up with isolation, structural elucidation, and targeted quantification using purified reference standards, the Korean team closed the loop from pattern to proof. The fifty annotated metabolites and eight fully characterized compounds now constitute a chemical library for G. affine that future researchers can build upon, whether they are investigating the plant’s bioactivity, breeding improved cultivars, or optimizing cultivation protocols for industrial production.

The broader significance extends beyond a single species. As consumer demand for plant-based functional foods grows, the industry increasingly needs rigorous, systems-level data on how agricultural practices shape phytochemical quality. This study offers a template: profile broadly, discriminate statistically, isolate the key players, quantify them precisely, and connect the chemistry to measurable biological function. Applied to G. affine, that template transformed a traditional spring vegetable into a chemically characterized functional food candidate, and the authors conclude that their findings support the plant as a promising resource for future nutraceutical applications. For a plant that has quietly flavored festival rice cakes for centuries, modern metabolomics has finally revealed just how much its chemistry depends on the sun, the soil, and the season.

Subject of Research: Metabolomic profiling of secondary metabolites in Gnaphalium affine across growth stages and cultivation systems

Article Title: Comparative metabolomic characterization of secondary metabolites in Gnaphalium affine D. Don considering the influence of growth stages and cultivation systems

Article References: Hong, S., Lee, H. G., Oh, S. M., Kim, H.-G., An, Y. M., Lee, S.-Y., Kim, D.-Y., Oh, S.-R., Kim, C. Y., Lee, J. H., & Ryu, H. W. (2026). Comparative metabolomic characterization of secondary metabolites in Gnaphalium affine D. Don considering the influence of growth stages and cultivation systems. npj Science of Food. https://doi.org/10.1038/s41538-026-01194-8

Image Credits: AI Generated

DOI: 10.1038/s41538-026-01194-8

Keywords: Gnaphalium affine, metabolomics, secondary metabolites, flavonoids, phenylpropanoids, caffeoylquinic acid, quercetin glycosides, luteolin glycosides, antioxidant activity, cultivation systems, UPLC-QTOF/MS, functional food

The compositional analysis alone is striking. On a dry-weight basis, the podmore powder contained 47.13 grams of crude protein per 100 grams, along with 19.28 grams of total lipids, 6.45 grams of ash, and 17.61 grams of crude fiber. Total carbohydrate reached 23.63 grams per 100 grams, but only 6.02 grams of that was available carbohydrate, because the bulk of the fiber fraction is chitin, the tough structural polysaccharide that forms the insect exoskeleton. The measured chitin content was 10.26 grams per 100 grams of dry weight, with 6.00 grams of its deacetylated derivative, chitosan. The estimated energy value, calculated with Atwater conversion factors, came to 386.12 kilocalories per 100 grams, and the very low moisture content of 3.51 percent points to good storage stability, although the authors caution that microbiological safety testing is still needed.

The amino acid profile adds further nutritional weight. Using high-performance liquid chromatography, the team found that podmore protein is rich in glutamic acid at 115.00 milligrams per gram of protein and aspartic acid at 94.86 milligrams per gram, two amino acids that contribute a savory, umami character to foods. More importantly from a nutritional standpoint, the powder supplied all of the essential amino acids, including leucine at 75.09 milligrams per gram, valine at 70.13, and lysine at 65.07. Lysine is the amino acid most often lacking in cereal-based diets, so a protein source that delivers it in abundance is noteworthy. The branched-chain amino acids leucine and isoleucine, which play central roles in muscle protein synthesis, were also well represented, while the sulfur-containing amino acids methionine and cystine appeared at 19.94 and 15.16 milligrams per gram respectively. The authors note that digestibility studies and a DIAAS score will be needed before podmore can be called a complete protein in the strict regulatory sense.

The mineral analysis revealed a profile dominated by phosphorus at 8,100 parts per million, followed by potassium at 6,000, calcium at 3,500, and magnesium at 1,700 parts per million. Among trace elements, iron led at 362 parts per million, with zinc at 85 and manganese at 1.7. Sodium, by contrast, was remarkably low at just 4.5 parts per million, which the researchers attribute to the nectar-and-pollen-based diet of honeybees and which they suggest could be nutritionally favorable. The team stresses, however, that total mineral content does not guarantee bioavailability, since some elements may be locked into structural components or protein complexes, and that insect-derived materials can accumulate environmental contaminants depending on foraging area and exposure to agrochemicals.

Perhaps the most eye-catching findings concern the bioactivity of a methanolic extract of the powder. HPLC profiling identified a broad spectrum of phenolic compounds, with gallic acid dominating at 818.06 micrograms per gram, followed by chlorogenic acid at 225.04, and smaller amounts of methyl gallate, caffeic acid, quercetin, kaempferol, vanillin, hesperetin, and more than a dozen other compounds. Catechin, rutin, and rosmarinic acid were not detected under the applied conditions. The researchers suggest that these plant-derived phenolics likely originate from the bees’ pollen and nectar diet and from residues in the digestive tract, echoing the chemistry of better-known bee products such as propolis and bee pollen.

That phytochemical richness translated into measurable laboratory activity. In the DPPH radical scavenging assay, the extract neutralized 74 percent of free radicals under the test conditions, while the ferric reducing antioxidant power assay yielded 86.0 milligrams of Trolox equivalents per gram of dry weight. The authors attribute this antioxidant capacity to the gallic and chlorogenic acids, but also point to protein-derived peptides and chitinous compounds as possible contributors. They are careful to note that chemical antioxidant assays do not directly predict effects in the human body, where digestion, metabolism, and storage can all alter activity, and that simulated gastrointestinal digestion and cellular assays will be needed to confirm physiological relevance.

The enzyme inhibition results are where the study veers into genuinely provocative territory. The podmore extract inhibited pancreatic lipase, the enzyme that breaks down dietary triglycerides, in a concentration-dependent manner, rising from 21.2 percent inhibition at 1.95 micrograms per milliliter to 96.9 percent at 1,000 micrograms per milliliter. Alpha-glucosidase, a key enzyme of carbohydrate digestion and a classic drug target in type 2 diabetes management, was inhibited from 30.9 percent to 83.7 percent across the same range, with acarbose and orlistat serving as reference inhibitors. Phenolic compounds are known to block these enzymes through hydrogen bonding and conformational interference at active sites, and similar inhibition has been reported for propolis and bee pollen. The authors emphasize that these are in vitro results only and cannot be translated into claims about diabetes or obesity treatment without mechanistic, bioavailability, and animal studies.

The cellular experiments pushed the envelope further. When MIN6 pancreatic beta cells were treated with the extract, insulin secretion rose under both low-glucose and high-glucose conditions, peaking at 40.73 nanograms per milliliter at 500 micrograms per milliliter under high glucose and 14.71 nanograms per milliliter at 250 micrograms per milliliter under low glucose. Intriguingly, secretion declined at the highest tested concentration of 1,000 micrograms per milliliter, a nonlinear response the researchers say could reflect feedback regulation or possible cytotoxicity, which cannot be distinguished without cell viability data. The team also detected chitinase activity of 47.21 units per milligram of protein in the powder, a biochemical feature that may prove useful for chitin processing and waste valorization, though the enzyme was not purified or characterized.

What makes the study notable is its breadth rather than any single result. Previous work on dead honeybees has tended to focus on isolated fractions, such as the chitin recovered by earlier researchers, or on whole-bee preparations like antioxidant-rich bee tea. By linking proximate composition, amino acid and mineral profiles, chitin and chitosan levels, phenolic chemistry, enzyme inhibition, and beta-cell function in a single dataset, the Cairo team has provided the first integrated case for podmore as a candidate functional ingredient. The authors are candid about the caveats: safety assessment, allergenicity testing, contaminant screening for heavy metals and pesticide residues, protein digestibility evaluation, and in vivo efficacy studies all remain to be done, and multi-season, multi-apiary sampling would strengthen the evidence base.

Still, the broader implications are hard to ignore. Insects are increasingly promoted by the Food and Agriculture Organization as a sustainable protein source for the future, and apiculture generates a continuous, low-cost stream of naturally deceased bees that currently has no market value. If subsequent research confirms the safety and bioavailability of podmore’s protein, minerals, chitinous fiber, and phenolic compounds, the humble pile of dead bees swept from the hive floor could become a genuine contributor to the circular bioeconomy, transforming one of beekeeping’s most unglamorous byproducts into a raw material for the functional food industry. For now, the study stands as a preliminary but compelling proof of concept that the most valuable part of the hive may be the part nobody wanted.

Subject of Research: Nutritional composition and in vitro bioactivity of dried honeybee podmore as a candidate functional food ingredient

Article Title: Chemical Composition and In Vitro Bioactive Potential of Dried Honeybee (Apis mellifera L.) Podmore as a Candidate Functional Food Ingredient

Article References: Ali, M. R., Mohamed, E. N., El‐Din, H. S., Tlay, R. H., & Abedelmaksoud, T. G. (2026). Chemical Composition and In Vitro Bioactive Potential of Dried Honeybee ( Apis mellifera L.) Podmore as a Candidate Functional Food Ingredient. Food Science & Nutrition, 14(10), Article e72471. https://doi.org/10.1002/fsn3.72471

Image Credits: AI Generated

DOI: 10.1002/fsn3.72471

Keywords: honeybee podmore, Apis mellifera, functional food, chitin, chitosan, antioxidant activity, alpha-glucosidase inhibition, pancreatic lipase, insulin secretion, phenolic compounds, apicultural byproducts, food science

The study, published in Food Science & Nutrition, was framed around the concept of medicine-food homology, a principle embedded in Chinese regulatory practice that classifies certain botanicals, including ginseng, as substances traditionally used as both food and medicine. In China, ginseng is officially listed in the medicine-food homology catalogue, permitting its use as a common food ingredient in soups, teas, beverages, and functional food products. The content of ginsenoside Rb1 in cultivated ginseng varies considerably with growing conditions, ranging from 2.22 to 11.22 milligrams per gram, but its long history of safe dietary exposure is precisely what makes it attractive as a candidate for nutrition-based cancer prevention rather than conventional pharmacology.

To identify the active substance responsible for the anti-pancreatic-cancer effects of a ginseng-containing herbal formula developed by the group, the researchers first applied ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry. This profiling step singled out ginsenoside Rb1 as a core bioactive component, prioritized over other ginsenosides such as Rg1, Re, and Rg3 because of its high abundance in ginseng, its favorable safety profile as a food-derived saponin, and its documented antitumor and immunomodulatory activities. The team then deployed a network pharmacology screen, integrating three target-prediction platforms with five pancreatic cancer disease-target databases, to narrow the field of candidate mechanisms.

The computational pipeline was ambitious in scope. It identified 587 candidate targets for ginsenoside Rb1 and 905 pancreatic cancer-related targets, with intersection analysis revealing 110 shared targets. The resulting protein-protein interaction network contained 491 nodes and 3,728 edges, and topology analysis based on degree, betweenness, and closeness centrality surfaced a set of hub genes including STAT3, AKT1, CASP3, BCL2, HIF1A, MTOR, and SRC. KEGG enrichment analysis ultimately locked the PI3K-AKT signaling pathway as the priority candidate for experimental validation, a hypothesis the team then carried into the laboratory.

The in vivo evidence came from an orthotopic pancreatic cancer model established by inoculating KPC-derived cancer cells directly into the pancreas of C57BL/6 mice. Mice were randomly assigned to five groups receiving saline, the chemotherapy drug gemcitabine, or ginsenoside Rb1 at 25, 50, or 100 milligrams per kilogram per day. The results were striking: ginsenoside Rb1 reduced tumor growth in a dose-dependent fashion, with the high-dose group achieving efficacy comparable to gemcitabine. Ki67 staining confirmed reduced tumor cell proliferation, and high-dose treatment prolonged survival without any obvious loss of body weight, a signal that the compound was well tolerated at therapeutic doses.

Metastasis, the process that makes pancreatic cancer so deadly, was also blunted. In a syngeneic liver metastasis model, ginsenoside Rb1 treatment reduced liver metastatic burden, as shown by smaller tumor-invading areas, fewer metastatic lesions on histological staining, and a lower liver-to-body weight ratio. Immunohistochemistry revealed that the compound suppressed the expression of metastasis-related epithelial-mesenchymal transition markers, including Zeb-1 and Vimentin, in the liver lesions. Together with the primary tumor data, these findings suggested that ginsenoside Rb1 acts on more than just the cancer cells themselves.

That suspicion hardened into the study’s central insight when the researchers turned to the tumor microenvironment. Although ginsenoside Rb1 showed only limited direct cytotoxicity against pancreatic cancer cell lines and no toxicity toward normal pancreatic ductal epithelial cells, it produced dramatic changes in the immune landscape of the tumors. Multiplex immunofluorescence revealed that macrophages were a major immune population in pancreatic tumor tissue, and the most notable change after treatment was a dose-dependent reduction in M2-like macrophage markers, including CD206, CD163, and ARG1. Flow cytometry of tumor-infiltrating cells confirmed that ginsenoside Rb1 selectively decreased ARG1-positive CD11b-positive F4/80-positive M2 macrophages while leaving CD86-positive M1 macrophages untouched, indicating a selective suppression of the pro-tumoral polarization program rather than a wholesale depletion of macrophages.

The mechanism was traced to the PI3K-AKT pathway. Western blotting showed that ginsenoside Rb1 reduced phosphorylation of PI3K and AKT in a dose-dependent manner in both tumor tissues and macrophages, and molecular docking with AutoDock Vina suggested stable binding of the compound to AKT1 and PIK3CA with strong binding energies. In cell culture, the team generated M2-like macrophages from both THP-1 cells and human peripheral blood monocytes, and found that ginsenoside Rb1 had minimal effects on unpolarized macrophages but reduced the induction of M2 markers such as CD206, CD115, and TGFB1 in both models. The compound, in other words, appears to intervene at the point where resting macrophages are being converted into tumor-supporting ones.

Functional assays drove the point home. Conditioned medium from ginsenoside Rb1-treated M2-like macrophages reduced the growth of a patient-derived pancreatic tumor organoid compared with medium from untreated M2 macrophages, suggesting that the reprogrammed macrophages had lost much of their tumor-promoting activity. In a complementary in vivo test, KPC-derived pancreatic cancer cells were co-injected with either untreated or ginsenoside Rb1-treated M2-like macrophages into C57BL/6 mice, and the co-injection of treated macrophages was associated with reduced metastatic burden. Safety evaluations reinforced the compound’s tolerability: major organs showed no gross abnormalities, serum markers of liver and kidney function, including ALT, AST, BUN, creatinine, and uric acid, remained unchanged, and hepatic expression of pro-inflammatory cytokines such as TNF-alpha, IFN-gamma, and IL-6 was not significantly altered.

The authors are careful about the limits of their evidence. The study does not establish definitive causality between PI3K-AKT inhibition and macrophage modulation, which would require pathway rescue or genetic gain-of-function experiments. Tumor-associated macrophage characterization relied on conventional M2-associated markers that cannot fully resolve the heterogeneity of these cells in pancreatic cancer, and only one patient-derived organoid line was used, so inter-patient variability remains untested. Critically, the compound was administered intraperitoneally, meaning that oral bioavailability, gut microbiota-mediated deglycosylation to compound K, food-matrix effects, and processing stability all require separate investigation before ginsenoside Rb1 can be developed as a functional food ingredient or nutritional adjuvant. Standardization, toxicological evaluation, and GRAS determination also lie ahead. Still, the work offers a compelling proof of concept: a dietary botanical constituent with centuries of safe human consumption can engage tumor-immune signaling in a way that is compatible with long-term nutritional intervention, opening a preventive, low-toxicity avenue against one of medicine’s most intractable cancers.

Subject of Research: Ginsenoside Rb1 from Panax ginseng reprograms tumor-associated macrophages via PI3K-AKT signaling to suppress pancreatic cancer progression

Article Title: Ginsenoside Rb1 From the Functional Food Panax ginseng Suppresses Pancreatic Cancer Progression via Macrophage Reprogramming Through the PI3K‐AKT Pathway

Article References: Dong, C.-S., Wang, G., Niu, Y., Sun, X., Ren, W., Zhang, J., Zhang, Y., Wu, R.-X., & Wu, X. (2026). Ginsenoside Rb1 From the Functional Food Panax ginseng Suppresses Pancreatic Cancer Progression via Macrophage Reprogramming Through the PI3K ‐ AKT Pathway. Food Science & Nutrition, 14(10), Article e72468. https://doi.org/10.1002/fsn3.72468

Image Credits: AI Generated

DOI: 10.1002/fsn3.72468

Keywords: ginsenoside Rb1, Panax ginseng, pancreatic cancer, macrophage polarization, PI3K-AKT pathway, tumor microenvironment, medicine-food homology, functional food, liver metastasis, network pharmacology, immunomodulation, patient-derived organoids

The clamworm, distributed across the intertidal zones of Russia, Japan, and China’s Yellow and Bohai Seas, has long been valued as a source of essential fatty acids, trace elements, and an amino acid profile remarkably similar to that of humans. Its enzymatic hydrolysates have previously demonstrated antioxidant, antitumor, and antithrombotic activities. Yet the organism’s poor sensory characteristics, an unpalatable odor and flavor, have limited its use in functional foods. The Maillard reaction, the non-enzymatic browning process that gives roasted coffee and grilled meats their aroma, offered a solution: reacting the protein hydrolysate with reducing sugars both improves flavor and generates new bioactive compounds. Until now, however, studies of clamworm Maillard products had focused almost exclusively on taste, never on liver health.

To prepare the test material, the team first optimized an ultrasound-assisted enzymatic hydrolysis process using a machine-learning-assisted response surface model, treating homogenized clamworm tissue with a neutral protease and flavor protease blend at 50 degrees Celsius for three hours. The resulting hydrolysate was then mixed with L-cysteine and an equal blend of ribose and glucose, and heated at 121 degrees Celsius for 64 minutes to drive the Maillard reaction. Quality criteria based on absorbance at 294 and 420 nanometers confirmed that the reaction had produced the desired browned products, rich in small peptides and modified amino acids.

The animal experiment followed a rigorous design. Six-week-old male ICR mice were divided into three groups of six: a liquid-diet control, an alcohol model group fed the Lieber-DeCarli alcoholic liquid diet for six weeks, and an intervention group that received the same alcohol diet plus a daily gavage of the clamworm Maillard products at 400 milligrams per milliliter. By the end of the study, the alcohol-fed mice had lost significant body weight while their livers swelled, with the liver index climbing from roughly 3.8 percent to 5.4 percent of body weight. Mice receiving the marine extract maintained body weight, liver weight, and liver index statistically indistinguishable from healthy controls, and their livers looked visibly normal, dark red rather than enlarged and discolored.

Under the microscope, the differences were just as striking. Hematoxylin and eosin staining revealed that alcohol feeding had shattered the liver’s orderly architecture, producing extensive inflammatory infiltration, focal hemorrhage, and a marked loss of binucleate hepatocytes. In the treated mice, inflammatory cell invasion was reduced and healthy binucleate hepatocytes returned in greater numbers. Blood chemistry told the same story: serum alanine aminotransferase and aspartate aminotransferase, the classic enzymatic signatures of hepatocyte damage, spiked in the alcohol group and fell significantly in the group given the Maillard products.

Digging into mechanism, the researchers measured three interconnected pathological processes central to alcoholic liver disease. On oxidative stress, alcohol feeding depressed hepatic levels of NRF2, the master transcription factor coordinating antioxidant defense, and simultaneously lowered the activities of the antioxidant enzymes superoxide dismutase and glutathione peroxidase while raising malondialdehyde, a marker of lipid peroxidation. Treatment with the clamworm products reversed every one of these indicators, restoring NRF2 protein, reviving both antioxidant enzymes, and cutting malondialdehyde back down. Because NRF2 controls the genes encoding SOD and GPx, the coordinated recovery suggests the compound helps preserve the cell’s native antioxidant machinery rather than simply scavenging radicals from outside.

Inflammation told a parallel story. Alcohol feeding elevated hepatic NF-κB p65, the core functional subunit of the central inflammatory transcription factor, along with its downstream cytokines tumor necrosis factor-alpha, interleukin-6, interleukin-1 beta, and interleukin-18. The Maillard product intervention significantly suppressed all five. Metabolomics added a fascinating layer: chronic alcohol depleted a whole family of endogenous lipid mediators called N-acyl amino acids, including palmitoyl, stearoyl, oleoyl, linoleoyl, arachidonoyl, and docosahexaenoyl species, which are known to regulate inflammatory signaling. The treated mice restored these mediators, alongside indole metabolites such as indole-3-carboxaldehyde and indoleacrylic acid, which have documented anti-inflammatory and liver-protective effects.

Lipid metabolism formed the third pillar of the protective effect. Alcohol-fed mice showed elevated serum total cholesterol and triglycerides, accumulation of glycerophospholipids such as lysophosphatidylcholines, and a rise in acylcarnitines like propionylcarnitine and acetylcarnitine, hallmarks of incomplete fatty acid oxidation and mitochondrial dysfunction. Crucially, alcohol also depressed hepatic CPT1A, the rate-limiting enzyme that shuttles fatty acids into mitochondria for burning. The clamworm treatment reversed all of these changes, restoring CPT1A protein levels and normalizing the lipid profile, which points to improved mitochondrial beta-oxidation as a key mechanism.

The untargeted metabolomics, performed by ultra-high-performance liquid chromatography coupled to an Orbitrap mass spectrometer, identified 91 differential metabolites between alcohol and control groups and 89 between treatment and alcohol groups, with 45 metabolites shared between the comparisons and reversed by the intervention. Tryptophan-derived metabolites, including L-kynurenine and glutathione itself, were depleted by alcohol and restored by treatment, tying the redox and immune findings together. Complementary experiments in AML12 mouse hepatocytes confirmed that the products directly reduced ethanol-induced reactive oxygen species and blunted ALT and AST leakage in cells, indicating cytoprotection independent of whole-body factors. Compositional profiling identified 27 significantly changed small molecules, dominated by N-acetyl-cysteine, which increased nearly 1,900-fold, plus arginine, cystine, and small peptides of two to six residues, several of which have known hepatoprotective credentials.

The authors are careful about limits. Metabolite annotations remain putative, the mechanisms are correlational rather than causally proven, the metabolomics cohort was small, and the study lacked in vivo control groups receiving the un-Maillard hydrolysate or plain amino acid and sugar mixtures, though the Maillard products outperformed the plain hydrolysate in cell experiments. Bioavailability, dosing, and toxicity in humans remain unknown. Still, the work delivers a compelling, multi-omics case that a humble marine worm, transformed by one of food chemistry’s oldest reactions, can simultaneously blunt oxidative stress, inflammation, and lipid dysregulation in the alcoholic liver. It is a striking reminder that functional food leads can come from the least glamorous corners of the ocean, and that the next generation of liver-protective nutraceuticals may begin in the intertidal mud.

Subject of Research: Hepatoprotective effects of Maillard reaction products from the marine annelid Perinereis aibuhitensis in a mouse model of alcoholic liver disease

Article Title: Hepatoprotective Effects of Maillard Reaction Products From Perinereis aibuhitensis: Identification and Metabolomic Insights in a Mouse Model of Alcoholic Liver Disease

Article References: Qiao, T., Lu, Y., Teng, T., Deng, Z., Liu, F., & Liu, C.-E. (2026). Hepatoprotective Effects of Maillard Reaction Products From Perinereis aibuhitensis : Identification and Metabolomic Insights in a Mouse Model of Alcoholic Liver Disease. Food Science & Nutrition, 14(10), Article e72417. https://doi.org/10.1002/fsn3.72417

Image Credits: AI Generated

DOI: 10.1002/fsn3.72417

Keywords: alcoholic liver disease, Perinereis aibuhitensis, Maillard reaction products, metabolomics, NRF2, NF-kB, CPT1A, oxidative stress, hepatoprotection, marine peptides, functional food, mouse model

The researchers collected pollen using traps fitted to hygienic beehives across Morocco’s Rabat-Salé-Kénitra, Fès-Meknès, and Tanger-Tétouan-Al Hoceïma regions between March and May 2023. Each sample was immediately frozen at minus 20 degrees Celsius to preserve its biochemical integrity. Back in the laboratory, the team used melissopalynology, the microscopic analysis of pollen grains, to determine the botanical origin of each sample, supplemented by scanning electron microscopy to visualize the intricate surface structures of the pollen grains themselves.

The palynological analysis revealed that every single sample was polyfloral, meaning the bees had foraged from multiple plant species rather than a single dominant flower. Eight plant families were identified across the collection, with the mustard family, Brassicaceae, appearing in seven of the eight samples, making it the most widespread floral resource in the study area. One sample from Sidi Slimane was the most botanically restricted, composed exclusively of Myrtaceae at 51 percent and Brassicaceae at 49 percent, while samples from Ouazzane and Douar Lafdoul showed the greatest botanical richness, containing four and five families respectively. This floral diversity proved to be far more than an ecological curiosity; it was the key variable underlying nearly every chemical difference the team later measured.

Physicochemical testing showed considerable variation across the samples. Moisture content ranged from just over 3 percent to nearly 27.5 percent, with most samples falling within the 10 to 30 percent range considered typical of fresh bee pollen. Water activity, a measure of the water available to spoilage microorganisms, remained between 0.31 and 0.42, safely below the 0.61 threshold at which yeasts and molds typically begin to proliferate. pH values clustered tightly around 5.0, and ash content, an indicator of total mineral load, ranged from 0.92 to 4.64 percent, all comfortably within the 6 percent maximum permitted by Brazilian and Argentinian regulations.

The mineral analysis, performed using inductively coupled plasma atomic emission spectroscopy, identified ten elements and confirmed potassium and calcium as the dominant macrominerals. Potassium concentrations spanned from 742 to 2,117 milligrams per kilogram, while calcium ranged from 677 to 2,197 milligrams per kilogram, with statistically significant variation between samples pointing to the influence of local soil and flora. Trace elements including iron, zinc, sodium, and selenium were also quantified. Critically, the team screened for heavy metal contamination and found that lead and cadmium, where detected at all, remained well below Codex and European Union safety limits. For a typical daily intake of 10 grams, estimated exposure to these metals would fall far beneath the tolerable thresholds established by the European Food Safety Authority, though the authors note that continued monitoring is advisable, particularly for children.

Nutritionally, the pollen proved to be a dense source of macronutrients. Total protein content ranged from 14.55 to 19.56 grams per 100 grams of dry weight, soluble carbohydrates from 17.2 to 28.87 grams per 100 grams, and lipids from 1.92 to 3.03 grams per 100 grams. Energy values ranged from roughly 157 to 205 kilocalories per 100 grams of dry weight. These figures align with the international literature on bee pollen, which typically reports protein contents between 10 and 40 grams per 100 grams, and they reinforce the product’s reputation as a protein-rich supplement comparable to legumes and certain oilseeds.

The bioactive profile was where the regional differences became most striking. Total phenolic content, measured by the Folin-Ciocalteu method and expressed as gallic acid equivalents, varied more than fourfold, from 4.19 to 17.39 milligrams per gram of dry weight. Flavonoid content ranged from 0.94 to 3.18 milligrams of quercetin equivalents per gram. High-performance liquid chromatography identified a diverse array of phenolic compounds across the samples, including gallic acid, naringin, rutin, vanillic acid, and p-coumaric acid. The sample from Ouazzane was the richest, yielding twenty distinct compounds, while the sample from Sidi Slimane contained only four. Intriguingly, the presence of naringin in samples containing citrus forage and rutin in samples rich in Brassicaceae and Papaveraceae species suggests that specific phenolic compounds could serve as chemical fingerprints for tracing the botanical origin of commercial pollen, a possibility the authors flag for targeted future investigation.

Antioxidant activity, assessed through three complementary assays, confirmed that the pollen extracts were potent radical scavengers. In the DPPH assay, the most active sample achieved 50 percent radical inhibition at a concentration of just 0.28 milligrams per milliliter, while ABTS values were even lower, indicating strong antiradical capacity. Ferric reducing power ranged from 87 to 147 micromoles of iron(II) equivalents per gram. One unexpected finding emerged from the correlation analysis: total phenolic content showed negative correlations with DPPH and ABTS activity, contradicting the usual assumption that more phenolics automatically mean more antioxidant power. The authors suggest this paradox may reflect the specific identity of the phenolic compounds present, the contribution of non-phenolic antioxidants such as vitamins and peptides, or antagonistic interactions within the complex pollen matrix.

Perhaps the most medically compelling results came from the enzyme inhibition assays. Because the digestive enzymes alpha-amylase and alpha-glucosidase break down dietary starch and sugars into glucose, inhibiting them can blunt the post-meal blood sugar spikes that drive type 2 diabetes complications. The pollen extracts inhibited both enzymes in a dose-dependent manner, with alpha-amylase IC50 values ranging from 263 to 954 micrograms per milliliter and alpha-glucosidase IC50 values from 145 to 670 micrograms per milliliter. Two samples stood out: the Sidi Slimane pollen, which was also the richest in phenolics and flavonoids, was the strongest alpha-amylase inhibitor, while the Boufekrane sample was the most potent against alpha-glucosidase. Although the synthetic drug acarbose remains far more powerful, the findings support the idea that flavonoids such as quercetin and luteolin, which can bind directly to the active sites of these enzymes, contribute meaningfully to the antihyperglycemic potential of pollen.

The study’s authors are careful to acknowledge its limitations. With only eight samples collected in a single spring season, the work provides an initial characterization rather than a definitive geographical or botanical profile, and the team calls for multi-season surveys, standardized color classification alongside palynological analysis, and advanced metabolomic profiling using HPLC-MS/MS to fully map the structure-activity relationships at play. In vivo and clinical trials will also be needed to confirm that the laboratory-measured bioactivities translate into real health benefits. Even so, the research establishes a valuable compositional baseline for Moroccan bee pollen and strengthens the case for this ancient food as a modern functional ingredient. As consumer demand for natural, health-promoting foods continues to grow, the humble pollen pellet, shaped by the flowers, soils, and climate of its origin, may prove to be one of the most chemically rich ingredients in the functional food arsenal.

Subject of Research: Nutritional, phytochemical, and functional characterization of bee pollen from eight regions of Morocco

Article Title: Multi‐Regional Characterization of Moroccan Bee Pollen: Nutritional, Bioactive, and Functional Properties

Article References: Diai, F., Bouddine, T., Kachmar, M. R., Kaddouri, M., Kassimi, C. E., Guirrou, I., Laaroussi, H., Al‐zharani, M., Nasr, F. A., Qurtam, A. A., Hajji, L., & Chakir, S. (2026). Multi‐Regional Characterization of Moroccan Bee Pollen: Nutritional, Bioactive, and Functional Properties. Food Science & Nutrition, 14(10), Article e72174. https://doi.org/10.1002/fsn3.72174

Image Credits: AI Generated

DOI: 10.1002/fsn3.72174

Keywords: bee pollen, Morocco, phenolic compounds, antioxidant activity, alpha-amylase inhibition, alpha-glucosidase inhibition, melissopalynology, mineral composition, functional food, type 2 diabetes, flavonoids, food science

The core of the review is a detailed accounting of what cactus actually contains. Far from being an empty succulent, the plant’s pads, known as cladodes, and its brightly colored fruits are packed with nutrients that rival or exceed those of more conventional produce. The analysis documents substantial levels of vitamins, including vitamin C, alongside meaningful quantities of minerals such as calcium, magnesium, and potassium. Dietary fiber emerges as one of the plant’s standout features, with both soluble and insoluble fractions present in the pads and fruit in significant amounts. This fiber content is not merely a bulk property; it underpins many of the physiological effects attributed to cactus consumption, from improved digestive function to better regulation of blood glucose and blood lipids. For populations where refined staples dominate the diet, such fiber-dense foods could play a meaningful corrective role.

Beyond the standard nutritional profile, the review devotes considerable attention to the plant’s bioactive compounds, the specialized molecules that give cactus its pharmacological reputation. Chief among these are betalains, the nitrogen-containing pigments responsible for the vivid magenta and orange hues of prickly pear fruit. Betalains are relatively rare in the edible plant kingdom, found prominently in cacti and beetroot, and they function as potent antioxidants capable of neutralizing reactive oxygen species that damage cells and drive chronic disease. The review also catalogs an array of polyphenols, including phenolic acids and flavonoids, which contribute additional antioxidant capacity and appear to modulate inflammatory signaling pathways. Carotenoids, another class of lipid-soluble pigments, add to the protective chemical arsenal. Together, these compounds form a complex phytochemical profile that the authors argue justifies classifying cactus as a functional food, meaning a food that delivers demonstrable health benefits beyond basic nutrition.

The health implications documented in the review are broad and, in several areas, striking. The evidence assembled points to significant antioxidant activity, which helps protect tissues from oxidative stress implicated in aging, cancer, and cardiovascular disease. Anti-inflammatory effects are similarly well supported, with cactus compounds shown to dampen the chronic low-grade inflammation that underlies many modern metabolic disorders. Perhaps most compelling for public health purposes are the anti-diabetic and cardioprotective properties. Multiple studies reviewed indicate that cactus consumption can improve glycemic control, an effect attributed to both its fiber content, which slows sugar absorption in the gut, and its bioactive compounds, which appear to influence glucose metabolism more directly. Cardioprotective effects include improvements in blood lipid profiles and reductions in blood pressure markers, suggesting that regular consumption could reduce the burden of cardiovascular disease, the leading cause of death worldwide.

What makes these findings particularly timely is the context in which they arrive. Global food systems face a convergence of pressures: a growing population expected to approach ten billion by mid-century, rising rates of diet-related chronic disease, and a climate that is making traditional agriculture increasingly unreliable in many regions. The review frames cactus as a plant uniquely suited to this predicament. Opuntia species are famously adapted to arid and semi-arid environments, employing a specialized form of photosynthesis known as crassulacean acid metabolism, or CAM, in which the plant opens its pores at night to minimize water loss. This physiological adaptation means cactus can produce food with minimal irrigation, tolerating drought conditions that would devastate conventional crops. In regions such as the Sahel, Mexico, the Mediterranean basin, and parts of South Asia, where water scarcity is already acute and worsening, this trait transforms cactus from a curiosity into a strategic resource.

The sustainability argument extends beyond water efficiency. Cactus plants thrive on degraded soils where other crops fail, require few chemical inputs, and can serve multiple functions simultaneously: food for humans, fodder for livestock, and even a vegetative barrier against soil erosion and desertification. The review explicitly connects these attributes to the United Nations Sustainable Development Goals, highlighting three in particular. SDG 2, Zero Hunger, is addressed through cactus potential to provide nutritious food in marginal environments where food insecurity is most severe. SDG 3, Good Health and Well-being, is supported by the plant’s documented functional food properties. SDG 13, Climate Action, is served by the crop’s resilience to climate variability and its low environmental footprint. This framing positions cactus not simply as a regional food tradition but as a candidate for deliberate integration into global food security strategy.

The authors, who also include Muhammed Adem Abdullahi of Jimma University, Vu Thi Kim Oanh of the Vietnam National University of Agriculture, and Kinfu Mekbib of the Addis Ababa Water and Sewerage Authority, emphasize that cactus is already a meaningful food source in many cultures. Indigenous and rural communities across the Americas, North Africa, and the Middle East have consumed prickly pear pads and fruit for centuries, and the plant holds particular cultural and economic significance in Mexico, where Opuntia cultivation is extensive. Yet despite this long history and the accumulating scientific evidence, cactus remains marginal in mainstream food markets and agricultural policy outside its traditional range. The review suggests this gap reflects a combination of limited consumer awareness, underdeveloped supply chains, and insufficient investment in processing technologies that could transform cactus into appealing modern food products such as juices, jams, flours, and nutraceutical extracts.

Processing and product development represent a critical frontier. The review notes that the bioactive compounds in cactus are sensitive to heat and processing conditions, meaning that preservation methods must be carefully designed to retain nutritional value. Betalains in particular are vulnerable to degradation, and optimizing extraction and stabilization techniques is an active area of food science research. At the same time, the plant’s versatility offers commercial opportunities: cactus fruit can be eaten fresh or processed into beverages and preserves, while cladodes can be consumed as vegetables, dried into powders, or incorporated into baked goods and functional food formulations. Developing these value chains in producing countries could create rural income opportunities while improving local nutrition, a dual benefit that aligns with broader sustainable development objectives.

As with any review, the strength of the conclusions depends on the quality of the underlying evidence, and the authors acknowledge that much of the research on cactus health effects comes from laboratory and animal studies, with a smaller body of controlled human trials. Translating promising bioactivity into verified clinical benefits will require rigorous intervention studies, standardized plant material, and better characterization of dose-response relationships. There are also agronomic questions to resolve, including varietal selection, cultivation practices, and post-harvest handling, areas where the authors’ own expertise in post-harvest management is directly relevant. The review’s open-access publication is intended to make this evidence base accessible to researchers, policymakers, and entrepreneurs who could accelerate the plant’s development.

Nevertheless, the overall message is one of considerable optimism. A plant that grows without irrigation on degraded land, produces food rich in fiber, vitamins, minerals, and rare antioxidant pigments, and offers documented anti-diabetic and cardioprotective properties is a rare asset in the search for sustainable food systems. As climate change redraws the map of where food can be reliably produced, crops adapted to heat and drought will inevitably move from the margins to the center of agricultural planning. The prickly pear cactus, long valued by the communities who knew it best, now has a scientific dossier to match its reputation. Whether it becomes a global staple or remains a regional treasure will depend on investment, innovation, and willingness to look beyond familiar crops, but the evidence assembled in this review makes a strong case that ignoring it would be a missed opportunity for both human health and planetary sustainability.

Subject of Research: Nutritional composition, bioactive compounds, and health and sustainability implications of the cactus plant (Opuntia spp.)

Article Title: A comprehensive review of nutritional composition and bioactive compounds of cactus plant and their implications for human health and sustainable development

Article References: Alemu, T. T., Abdullahi, M. A., Oanh, V. T. K., & Mekbib, K. (2026). A comprehensive review of nutritional composition and bioactive compounds of cactus plant and their implications for human health and sustainable development. Discover Sustainability. https://doi.org/10.1007/s43621-026-04892-1

Image Credits: AI Generated

DOI: 10.1007/s43621-026-04892-1

Keywords: cactus, Opuntia, prickly pear, betalains, polyphenols, functional food, antioxidants, anti-diabetic, food security, sustainable agriculture, climate resilience, Sustainable Development Goals

The research team, led by Chengzhen Gu and colleagues, compared two commercially cultivated strains grown under identical controlled conditions: the white Baicha No. 1 and the brown Gucha No. 2. Mycelia of both strains were inoculated into mushroom bags, incubated at 20 to 22 degrees Celsius until fully colonized, and then transferred to a fruiting chamber at 25 degrees Celsius. After primordia emerged and matured over two days, the fruiting bodies were harvested and frozen at minus 80 degrees Celsius, ensuring that any differences measured in the laboratory reflected genuine strain-level biology rather than environmental or handling variation.

The nutritional comparison was unambiguous. The white strain contained significantly higher levels of crude polysaccharides, soluble protein, and crude fiber than its brown counterpart. Polysaccharide content reached 0.5038 grams per 100 grams in the white strain versus 0.3984 grams in the brown, soluble protein measured 4.0894 milligrams per gram against 3.5188, and crude fiber came in at 2.6001 percent versus 1.7724 percent. These are not trivial differences. Polysaccharides are recognized immunological components, protein content is a direct index of nutritional value, and crude fiber is associated with intestinal health, so the white strain leads on all three fronts simultaneously.

Texture analysis told a similar story. Using Texture Profile Analysis with a flat disk probe deforming samples by 60 percent, the researchers measured hardness, cohesiveness, springiness, gumminess, and chewiness in both caps and stems. The white strain’s caps registered a hardness of 5.96 newtons compared with 3.99 for the brown, and its stems reached 40.50 newtons against 33.92. Chewiness, which integrates hardness, springiness, and cohesiveness into a single measure of the energy needed to make food swallowable, was nearly double in the white strain’s caps. In practical terms, the white mushroom resists mechanical stress better during handling and processing while delivering a firmer, richer mouthfeel that demands more satisfying mastication.

Flavor is where the comparison becomes genuinely dramatic. An electronic tongue mimicking human gustation revealed that the white strain scored significantly higher on sourness, bitterness, sweetness, and umami, with only saltiness comparable between the two. Multivariate statistical modeling separated the two strains cleanly, with the model explaining a cumulative 87.4 percent of variance and validation statistics confirming robust reliability. Behind those sensor readings lay hard chemistry: total free amino acids in the white strain reached 15.18 milligrams per gram versus 10.78 in the brown, and every individual amino acid detected was significantly more abundant in the white variety. Seven amino acids exceeded their taste activity thresholds in the white strain, compared with five in the brown, meaning the white mushroom delivers more compounds at concentrations high enough for human palates to register.

Umami, the savory fifth taste that makes mushrooms so prized in cuisine, depends on the synergy between umami amino acids such as glutamic and aspartic acid and 5′-nucleotides produced by enzymatic degradation of nucleic acids. The white strain’s total 5′-nucleotide content was 1.39 milligrams per gram against 0.93 for the brown, and its equivalent umami concentration, expressed as monosodium glutamate equivalents, came to 7.5681 grams per 100 grams, significantly higher than the brown strain. Re-addition experiments, in which key taste compounds were spiked back into mushroom extracts at double their original concentrations and re-analyzed electronically, confirmed that aspartic acid, glutamine, tryptophan, lysine, and 5′-cytidylic acid drive sourness while glutamine and tryptophan drive umami. The researchers caution that final taste perception arises from synergistic and antagonistic interactions among many compounds rather than any single molecule, which is precisely why the multi-technique approach matters.

Aroma proved more nuanced. Gas chromatography-mass spectrometry identified 41 volatile compounds in the white strain and 37 in the brown, with 23 shared. The white strain was dominated by aldehydes, which accounted for 41.26 percent of its volatile content, while the brown strain leaned on ketones at 48.15 percent. Relative odor activity value analysis identified 1-octen-3-one, the compound responsible for the classic mushroom-like, earthy odor of edible fungi, as the single most significant aroma contributor in both strains. But the white strain carried twelve significant aroma contributors compared with eight in the brown, including high levels of hexanal, which imparts fresh, green notes, and unique contributors such as 3-methylpentanal and 2-methylbutanal. The brown strain, by contrast, derived much of its aroma from 1-octen-3-ol and 3-octanone, producing a softer, more herbal-fresh profile.

Perhaps the most consequential findings concern anticancer activity. The researchers tested ethanol extracts against two human cancer cell lines: HCT116 colon cancer cells and HGC27 gastric cancer cells. Against HCT116 cells, the white strain extract achieved a half-maximal inhibitory concentration of 1141 micrograms per milliliter, whereas the brown strain required 5334 micrograms per milliliter, nearly five times the dose for the same effect. Against HGC27 cells, the white strain’s IC50 was 707.9 micrograms per milliliter versus 1655 for the brown. Both extracts inhibited proliferation in a concentration-dependent manner, and both were more potent against gastric cancer cells than colon cancer cells. Flow cytometric measurements of reactive oxygen species suggested a plausible mechanism: cancer cells are highly sensitive to fluctuations in ROS levels, and both extracts significantly elevated intracellular ROS relative to untreated controls, consistent with ROS-mediated induction of DNA damage and apoptosis. The researchers note that the decline in ROS at the highest extract concentrations in HCT116 cells may reflect activation of cellular antioxidant defenses that prevent ROS from surpassing the cytotoxic threshold.

The superior bioactivity of the white strain may stem from its higher polysaccharide content or from structural differences in its polysaccharides and proteins. Previous work has shown that a fucoglucogalactan from A. cylindracea induces lysosome-mediated apoptosis in colorectal cancer cells through an H3K27ac-regulated cathepsin D pathway, and a ubiquitin-like peptide from the same species stimulates nitric oxide production by macrophages while directly suppressing proliferation. Whether the white strain’s polysaccharides share these structures, or possess distinct architectures that make them even more potent, remains an open question the team intends to pursue through isolation and mechanistic studies of the specific active components.

Beyond the laboratory, the implications reach into the economics of mushroom farming. The brown strain dominates both cultivation and the commercial market, and the industry’s dependence on a single strain creates structural homogeneity that leaves producers vulnerable. The white strain is not being proposed as a replacement but as a supplement, a diversification of the germplasm pool that gives growers and food manufacturers new options for condiments, mushroom sauces, and instant soup bases. For consumers, the message is even simpler: the pale newcomer on the shelf packs more protein, more fiber, more immune-relevant polysaccharides, a bolder umami punch, and demonstrably stronger anticancer activity in cell models than the familiar brown variety. If human studies and larger-scale cultivation trials bear out these results, the white strain of Agrocybe cylindracea may soon be doing for this species what premium varieties have done for other mushrooms, transforming a commodity crop into a functional food with genuine nutraceutical potential as an adjunct in cancer supportive care.

Subject of Research: Comparative nutritional, flavor, and anticancer evaluation of white and brown strains of the edible mushroom Agrocybe cylindracea

Article Title: White agrocybe cylindracea outperforms the brown strain in nutritional value, flavor profile, and anticancer activity

Article References: Gu, C., Lin, Y., Hao, M., Lin, Z., Fang, J., Luo, J., & Sun, S. (2026). White agrocybe cylindracea outperforms the brown strain in nutritional value, flavor profile, and anticancer activity. Food Chemistry: X, Article 104579. https://doi.org/10.1016/j.fochx.2026.104579

Image Credits: AI Generated

DOI: 10.1016/j.fochx.2026.104579

Keywords: Agrocybe cylindracea, mushroom nutrition, umami, polysaccharides, anticancer activity, reactive oxygen species, electronic tongue, electronic nose, GC-MS, food chemistry, functional food, strain comparison