Steam Explosion Pretreatment Changes Ruminal Fermentationin vitroof Corn Stover by Shifting Archaeal and Bacterial Community Structure

文献类型： 外文期刊

第一作者： Wang, Kun

作者： Wang, Kun;Nan, Xuemei;Xiong, Benhai;Wang, Kun;Zhao, Guangyong;Jiang, Linshu

作者机构：

关键词： steam explosion; corn stover; ruminal fermentationin vitro; archaeal community; bacterial community

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.64； 五年影响因子：6.32 ）

ISSN： 1664-302X

年卷期： 2020 年 11 卷

页码：

收录情况： SCI

摘要： Steam explosion is an environment-friendly pretreatment method to improve the subsequent hydrolysis process of lignocellulosic biomass. Steam explosion pretreatment improved ruminal fermentation and changed fermentation pattern of corn stover during ruminal fermentationin vitro. The study gave a comprehensive insight into how stream explosion pretreatment shifted archaeal and bacterial community structure to change ruminal fermentationin vitroof corn stover. Results showed that steam explosion pretreatment dramatically improved the apparent disappearance of dry matter (DM), neutral detergent fiber (NDF), and acid detergent fiber (ADF). Steam explosion pretreatment significantly increased the molar proportion of propionate and decreased the ratio of acetate to propionate. At archaeal level, steam explosion pretreatment significantly increased the relative abundance ofMethanobrevibacter, which can effectively remove metabolic hydrogen to keep the fermentation continuing. At bacterial level, the shift in fermentation was achieved by increasing the relative abundance of cellulolytic bacteria and propionate-related bacteria, including Spirochaetes, Elusimicrobia, Fibrobacteres,Prevotella,Treponema,Ruminococcus, andFibrobacter.

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