Protection of humus acids in chicken manure compost by inhibiting aromatic degrading bacteria
文献类型： 外文期刊
作者： Zhang, Ruju 1 ; Zhang, Yingpeng 1 ; Ye, Xiaomei 1 ; Ma, Qiuqin 1 ; Zhou, Jin 4 ; Su, Xinya 5 ; Xi, Yonglan 1 ; Du, Jing 1 ; Wang, Cong 1 ; Zhu, Fei 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Anim Sci, Nanjing 210014, Peoples R China
2.Minist Agr & Rural Affairs, Key Lab Crop & Livestock Integrat, Nanjing 210014, Peoples R China
3.Jiangsu Collaborat Innovat Ctr Solid Organ Waste R, Nanjing 210095, Peoples R China
4.Tianjin Normal Univ, Coll Life Sci, Tianjin Key Lab Anim & Plant Resistance, Tianjin 300387, Peoples R China
5.Northeast Agr Univ, Coll Life Sci, Harbin 150030, Peoples R China
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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