Long-term rumen microorganism fermentation of corn stover in vitro for volatile fatty acid production

文献类型： 外文期刊

第一作者： Liang, Jinsong

作者： Liang, Jinsong;Fang, Wei;Chang, Jianning;Ma, Weifang;Zhang, Ru;Chen, Le;Huang, Jianghao;Zhang, Panyue;Liang, Jinsong;Fang, Wei;Chang, Jianning;Ma, Weifang;Zhang, Ru;Chen, Le;Huang, Jianghao;Zhang, Panyue;Zhang, Guangming;Zhang, Panyue;Nabi, Mohammad;Zubair, Muhammad;Zhang, Panyue

作者机构：

关键词： Volatile fatty acids; Long-term fermentation; Hydrolysis; Acidogenesis; Rumen microorganisms

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：11.889； 五年影响因子：11.139 ）

ISSN： 0960-8524

年卷期： 2022 年 358 卷

页码：

收录情况： SCI

摘要： Rumen microorganisms have the ability to efficiently hydrolyze and acidify lignocellulosic biomass. The effectiveness of long-term rumen microorganism fermentation of lignocellulose in vitro for producing volatile fatty acids (VFAs) is unclear. The feasibility of long-term rumen microorganism fermentation of lignocelluose was evaluated in this study, and a stable VFA production was successfully realized for 120 d. Results showed that VFA concentration reached to 5.32-8.48 g/L during long-term fermentation. Hydrolysis efficiency of hemicellulose and cellulose reached 36.5%-52.2% and 29.4%-38.4%, respectively. A stable bacterial community was mainly composed of Prevotella, Rikenellaceae_RC9_gut_group, Ruminococcus, and Succiniclasticum. VFA accumulation led to a pH decrease, which caused the change of bacterial community structure. Functional prediction showed that the functional genes related to hydrolysis and acidogenesis of corn stover were highly expressed during long-term fermentation. The successful long-term rumen fermentation to produce VFAs is of great significance for the practical application of rumen microorganisms.

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