Effect of homemade compound microbial inoculum on the reduction of terramycin and antibiotic resistance genes in terramycin mycelial dreg aerobic composting and its mechanism

文献类型： 外文期刊

第一作者： Chen, Sainan

作者： Chen, Sainan;Zhong, Weizhang;Ning, Zhifang;Niu, Jianrui;Qin, Xue;Li, Zaixing;Chen, Sainan;Zhong, Weizhang;Ning, Zhifang;Niu, Jianrui;Qin, Xue;Li, Zaixing;Feng, Jing

作者机构：

关键词： Antibiotic mycelial dreg; Co-composting; Antibiotic residue; Metagenomics; Microbial community

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：11.4； 五年影响因子：10.6 ）

ISSN： 0960-8524

年卷期： 2023 年 368 卷

页码：

收录情况： SCI

摘要： In order to tackle the issue of terramycin mycelial dreg (TMD) diagnosis and removal of terramycin and anti-biotic resistance genes (ARGs), this study adopted aerobic composting (AC) technology and added homemade compound microbial inoculum (HCMI) to promote the AC of TMD and enhance the removal of terramycin and ARGs. The findings demonstrated that terramycin residue could be basically harmless after AC. Moreover, HCMI not only reduced QacB and tetH but also increased the degradation rates of VanRA, VanT, and dfrA24 by 40.81%, 5.65%, and 54.18%, respectively. The HCMI improved the removal rate of ARG subtypes to a certain extent. According to redundancy analysis, during AC, the succession of the microbial community had a stronger in-fluence on the variance of ARG subtype than the environmental conditions. Differences in the abundance of various bacteria due to changes in temperature may be an intrinsic mechanism for the variation of ARG subtypes.

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