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