ORIGINAL RESEARCH article
Front. Sustain. Food Syst.
Sec. Waste Management in Agroecosystems
Volume 9 - 2025 | doi: 10.3389/fsufs.2025.1563421
Chitosan oligosaccharide and Enteromorpha prolifera polysaccharides as additives affect the bacterial community and optimize the compost performance
Provisionally accepted
Xingsheng Yin1
Shutong Chen2Guangcai Shen1Guangfu Zhang1Guangyun Meng1Siman Gao1
Hui Yao2*
Xiangwei You2*
Yiqiang Li2- 1Yunnan Tobacco Company Baoshan Company, Baoshan, Baoshan, Shanghai Municipality, China
- 2Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong Province, China
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The yield of agricultural wastes is increasing year by year, and composting is a common and effective strategy. However, the influence of marine-derived carbohydrates such as chitosan oligosaccharide (COS) and Enteromorpha prolifera polysaccharides (EPP) -on composting efficiency and microbial dynamics remains poorly understood. Here, we evaluated how COS and EPP supplementation affects composting performance using agricultural wastes (cow manure, rice husks, and tomato residues) as substrates. These additives not only advanced the thermophilic phase and facilitated compost maturation but also reshaped the composition of the bacterial community in compost piles. By providing suitable microenvironments, the carbohydrates-containing group increased the abundance of thermophilic bacteria such as Ureibacillus, Geobacillus, and Ammoniibacillus, facilitating the degradation and utilization of organic matter. During which, the organic matters loss rates of COS and EPP were 26.61% and 12.66% higher than CK, respectively. By increasing the abundance of Cellvibrio and Flavobacterium in the cooling phase, carbohydrates-containing additives are expected to promote the conversion of recalcitrant lignocellulosic fibers. Additionally, PICRUSt 2 predictions revealed that carbohydrates addition increased the gene abundance related to amino carbohydrates and nucleotide carbohydrates metabolism, fructose and mannose metabolism, galactose metabolism, and butanoate metabolism in the initial and thermophilic phases, thereby facilitating carbohydrate metabolism. In summary, the addition of carbohydrates-containing additives enhanced the maturity and fertility of compost products and exerted significant regulatory effects on the composition and function of the bacterial community during composting.
Keywords: Agricultural wastes, Composting performance, bacterial community, metabolic function, Co-occurrence network additives during composting: A review. Waste Manage. (Oxford). 158, 93-106
Received: 20 Mar 2025; Accepted: 11 Jul 2025.
Copyright: © 2025 Yin, Chen, Shen, Zhang, Meng, Gao, Yao, You and Li. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Hui Yao, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, Shandong Province, China
Xiangwei You, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, Shandong Province, China
Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.