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Home Science News Agriculture

Scientists modified citrus pectin by induced electric field used to develop pectin product

August 28, 2024
in Agriculture
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Pectin, a natural and nontoxic acidic polysaccharide, is widely found in the primary cell wall and inner layer of terrestrial higher plants. The main domains of pectin are homogalacturonan and rhamnogalacturonan I, which contribute to the complex its structure among natural polysaccharides.

Pectin, a natural and nontoxic acidic polysaccharide, is widely found in the primary cell wall and inner layer of terrestrial higher plants. The main domains of pectin are homogalacturonan and rhamnogalacturonan I, which contribute to the complex its structure among natural polysaccharides.

Pectin is widely used as a natural macromolecule in various applications, as a thickener, stabilizer, gel agent, texture modifier, microcapsule wall material and dietary fiber, as well as in special food design. However, most pectin exists in the form of native pectin, which has a large molecular weight and limited solubility, restricting the practical application of pectin and necessitating its modification to meet specific requirements. The traditional methods of modifying pectin include chemical degradation and enzymatic treatment poses a potential threat to human health and safety.

In a new study published in the KeAi journal, a team of researchers from the Dongguan Key Laboratory of Typical Food Precision Design at Dongguan University of Technology used magneto-induced electric field (MIEF) technology to explore the structural and rheological properties of citrus pectin under different pH conditions.

“MIEF was discovered in the early years for the invention of engines and can act on objects through non-thermal and thermal effects without direct contact, applying for the disinfection of microorganism, as well as for the degradation and modification of polysaccharides,” explains senior and corresponding author Jing-kun Yan. “Notably, MIEF not only accelerates the reaction efficiency through the thermal action generated by working, but also promoted the movement of charged particles in the sample due to the electric field, as well as improves the rate and yield of chemical reactions.”

The team’s results show that as the pH increased to 4.0, 7.0, and 10.0, the molecular weight, degree of esterification, and galacturonic acid content of CP decreased accordingly treat by MIEF.

“At pH values of 4.0 and 7.0, MIEF treatment caused fractures in the side chains of CP, while at pH 10.0, the main chain broke,” shares Yan. “MIEF treatment under these conditions enhanced the steady-state fluid behavior and dynamic viscoelastic properties of CP by promoting increased entanglements of neutral sugar side chains.

The study provides a green modification technique for CP and its application to functional foods.

###

Contact the author: Jing-Kun Yan, Dongguan Key Laboratory of Typical Food Precision Design, China National Light Industry Key Laboratory of Healthy Food Development and Nutrition Regulation, School of Life and Health Technology, Dongguan University of Technology, Dongguan, China. yanjk@dgut.edu.cn

The publisher KeAi was established by Elsevier and China Science Publishing & Media Ltd to unfold quality research globally. In 2013, our focus shifted to open access publishing. We now proudly publish more than 100 world-class, open access, English language journals, spanning all scientific disciplines. Many of these are titles we publish in partnership with prestigious societies and academic institutions, such as the National Natural Science Foundation of China (NSFC).



Journal

Food Physics

DOI

10.1016/j.foodp.2024.100021

Method of Research

Experimental study

Subject of Research

Not applicable

Article Title

Effect of magneto-induced electric field on the physicochemical, structural and rheological properties of citrus pectin at different pH values

COI Statement

The authors declare no conflict of interest.

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