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Team develops technology for producing bioplastics from agricultural and food byproducts

May 10, 2024
in Science
Team develops technology for producing bioplastics from agricultural and food byproducts
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Development of technology for producing bioplastics from agricultural and food byproducts by the World Institute of Kimchi

Schematic diagram of cabbage waste upcycling technology. Credit: The World Institute of Kimchi

As kimchi has been drawing attention as a global healthy food trend, cabbage is one of the representative vegetables used as a main ingredient for manufacturing kimchi overseas.

The annual global production of cabbage and other Brassica crops is reported to be 72 million tons, and more than 30% of them are estimated to be discarded during the manufacturing and distribution processes, causing environmental pollution as well as considerable waste disposal costs in the industry.

In connection with this problem, Hae Choon Chang, President of the World Institute of Kimchi (WiKim), has announced that the institute has developed a bio-refactoring-based upcycling technology that can convert cabbage byproducts discarded as waste during the food manufacturing process into biodegradable plastics.

Bio-refactoring refers to a technology for redesigning microorganisms to give new functions other than their existing characteristics.

The research team led by Dr. Jung Eun Yang, a senior researcher of the Fermentation Regulation Technology Research Group at the WiKim, developed microbial strains for the production of biodegradable bioplastics by using bio-refactoring technology, and identified conditions for achieving a sugar conversion rate of up to 90.4% by optimizing the concentrations of enzymes and the substrate used in the saccharification process. The work is published in the Journal of Agricultural and Food Chemistry.

In particular, for the first time in the world, the research team found that malic acid, one of the bioactive materials in cabbage byproducts, can contribute to the productivity improvement of polyhydroxyalkanoate (PHA). PHA is a bio-based biodegradable material obtained through microbial fermentation, and is characterized by biodegradability in natural environments.

The newly developed technology can be applied to various agricultural and food byproducts such as waste from cabbage and onions used for kimchi production, and is expected to reduce the waste disposal costs for byproducts from the kimchi manufacturing process, which are estimated to be 10 billion won per year.

“The results of this research are significant in terms of having secured an environmentally-friendly technology for converting agricultural and food waste into high value-added materials,” said Dr. Hae Woong Park, director of the Technology Innovation Research Division of the WiKim. He added, “We will continue to develop upcycling technology in the agricultural and food sectors so that the kimchi industry will contribute to the achievement of carbon neutrality.”

Meanwhile, the research team analyzed the components in cabbage byproducts, and systematically categorized various components helpful for microbial growth. Based on these research results, the team plans to develop the core technology to convert agricultural and food waste into various high-value-added materials.

More information:
Jung Eun Yang et al, Valorization of Cabbage Waste as a Feedstock for Microbial Polyhydroxyalkanoate Production: Optimizing Hydrolysis Conditions and Polyhydroxyalkanoate Production, Journal of Agricultural and Food Chemistry (2024). DOI: 10.1021/acs.jafc.3c07057

Citation:
Team develops technology for producing bioplastics from agricultural and food byproducts (2024, May 10)
retrieved 10 May 2024
from https://phys.org/news/2024-05-team-technology-bioplastics-agricultural-food.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

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Copyright for syndicated content belongs to the linked Source : Phys.org – https://phys.org/news/2024-05-team-technology-bioplastics-agricultural-food.html

Tags: developssciencetechnology
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