Increasing humification and reducing CH4 emission during rice straw fermentation: the role of Streptomyces rochei ZY-2
文献类型： 外文期刊
第一作者： Fu, B.
作者： Fu, B.;Wei, Z.;Fu, B.;Zhang, J.;Huang, H.;Wang, Q.;Qu, P.;Gao, B.
作者机构：
关键词： Streptomyces rochei ZY-2; Aeration intensity; Humification; GHG emissions
期刊名称：INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY （ 影响因子：3.4； 五年影响因子：3.3 ）
ISSN： 1735-1472
年卷期： 2025 年 22 卷 8 期
页码：
收录情况： SCI
摘要： This research aims to explore the effects of ZY-2 inoculant under different aeration intensities on humification process and greenhouse gas emissions during rice straw fermentation by physicochemical and high-throughput pyrosequencing technology. The results showed that the degree of humification was increased by 18.31% and the emission of CH4 was reduced by 30.21% in the ZY-2 inoculation with 0.3 L min(-1) kg(-1) organic matter (OM) aeration intensity treatment. Meanwhile, the structure of humus in the inoculation treatments was more complicated due to more polyphenols were participated in the formation of humus. The degradation of cellulose, hemicellulose, and lignin was increased by 35.41%, 23.92%, and 14.67% in the inoculation with 0.3 L min(-1) kg(-1) organic matter aeration intensity treatment, respectively. Therefore, more amino acids (27%), reducing sugars (26%), and polyphenols (14%) were produced for participating in the formation of humus. The inoculation of ZY-2 with an appropriate aeration intensity reduced the abundance of Tepidimicrobium and Caldicoprobacter that contributed to the emission of CH4 while enriched Bacillus, Oceanobacillus and Thermobifica for OM biodegradation and humification. Therefore, we concluded that the Streptomyces rochei ZY-2 inoculant combined with 0.3 L min(-1) kg(-1) OM aeration intensity was an effective strategy to improve the fermentation quality and reduce CH4 emission during rice straw fermentation.
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