Protection of humus acids in chicken manure compost by inhibiting aromatic degrading bacteria

IF 9.7 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology Pub Date : 2025-06-30 DOI:10.1016/j.biortech.2025.132920

Ruju Zhang , Yingpeng Zhang , Xiaomei Ye , Qiuqin Ma , Jin Zhou , Xinya Su , Yonglan Xi , Jing Du , Cong Wang , Fei Zhu

{"title":"Protection of humus acids in chicken manure compost by inhibiting aromatic degrading bacteria","authors":"Ruju Zhang , Yingpeng Zhang , Xiaomei Ye , Qiuqin Ma , Jin Zhou , Xinya Su , Yonglan Xi , Jing Du , Cong Wang , Fei Zhu","doi":"10.1016/j.biortech.2025.132920","DOIUrl":null,"url":null,"abstract":"<div><div>Microorganisms are a “double-edged sword” for humus (HS) formation in compost. Their degradation activity provides precursors for HS formation, but also leads to HS degradation in nutrient-limited environments. This study aimed to investigate the protective effect of chitosan (CTS) on HS stabilization in compost by inhibiting microbial degradation, taking advantage of CTS’s high adsorption efficiency and antibacterial properties. Compared to the control group (CK), the HS contents in the CTSQ group (0 d) and CTSH group (8 d) increased by 9.26 mg/g and 12.91 mg/g, respectively, with the CTSH group showing a significantly better effect on HS content (<em>P</em> < 0.05). Furthermore, CTS significantly reduced the abundance of 18 microbial species capable of degrading aromatic compounds, including <em>Ulvibacter</em> and <em>Brevibacterium</em>, suggesting a possible mechanism by which CTS protects HS from microbial decomposition. These findings provide valuable insights for the practical application of HS stabilization technologies in composting, highlighting the potential of CTS as an effective agent for improving HS preservation.</div></div>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"435 ","pages":"Article 132920"},"PeriodicalIF":9.7000,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bioresource Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0960852425008867","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRICULTURAL ENGINEERING","Score":null,"Total":0}

引用次数: 0

Abstract

Microorganisms are a “double-edged sword” for humus (HS) formation in compost. Their degradation activity provides precursors for HS formation, but also leads to HS degradation in nutrient-limited environments. This study aimed to investigate the protective effect of chitosan (CTS) on HS stabilization in compost by inhibiting microbial degradation, taking advantage of CTS’s high adsorption efficiency and antibacterial properties. Compared to the control group (CK), the HS contents in the CTSQ group (0 d) and CTSH group (8 d) increased by 9.26 mg/g and 12.91 mg/g, respectively, with the CTSH group showing a significantly better effect on HS content (P < 0.05). Furthermore, CTS significantly reduced the abundance of 18 microbial species capable of degrading aromatic compounds, including Ulvibacter and Brevibacterium, suggesting a possible mechanism by which CTS protects HS from microbial decomposition. These findings provide valuable insights for the practical application of HS stabilization technologies in composting, highlighting the potential of CTS as an effective agent for improving HS preservation.

Abstract Image

查看原文本刊更多论文

抑制芳香降解菌对鸡粪堆肥腐殖酸的保护作用。

微生物是堆肥中腐殖质（HS）形成的“双刃剑”。它们的降解活性为HS的形成提供了前体，但也导致HS在营养有限的环境中降解。本研究旨在利用壳聚糖（CTS）的高效吸附和抗菌特性，通过抑制微生物降解来研究其对堆肥中HS稳定性的保护作用。与对照组（CK）相比，CTSQ组（0 d）和CTSH组（8 d） HS含量分别提高了9.26 mg/g和12.91 mg/g，其中CTSH组对HS含量的影响显著优于CK （P < 0.05）。此外，CTS显著降低了18种能够降解芳香族化合物的微生物的丰度，包括Ulvibacter和Brevibacterium，这可能是CTS保护HS免受微生物分解的机制。这些发现为HS稳定技术在堆肥中的实际应用提供了有价值的见解，突出了CTS作为提高HS保存的有效剂的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Bioresource Technology 工程技术-能源与燃料

CiteScore

20.80

自引率

19.30%

发文量

2013

审稿时长

12 days

期刊介绍： Bioresource Technology publishes original articles, review articles, case studies, and short communications covering the fundamentals, applications, and management of bioresource technology. The journal seeks to advance and disseminate knowledge across various areas related to biomass, biological waste treatment, bioenergy, biotransformations, bioresource systems analysis, and associated conversion or production technologies. Topics include: • Biofuels: liquid and gaseous biofuels production, modeling and economics • Bioprocesses and bioproducts: biocatalysis and fermentations • Biomass and feedstocks utilization: bioconversion of agro-industrial residues • Environmental protection: biological waste treatment • Thermochemical conversion of biomass: combustion, pyrolysis, gasification, catalysis.