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

文献类型： 外文期刊

第一作者： Zhang, Ruju

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

作者机构：

关键词： Composting; Microbial degradation; Chitosan; Humus

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.0； 五年影响因子：9.5 ）

ISSN： 0960-8524

年卷期： 2025 年 435 卷

页码：

收录情况： SCI

摘要： 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.

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