Steam explosion enhances digestibility and fermentation of corn stover by facilitating ruminal microbial colonization

文献类型: 外文期刊

第一作者: Zhao, Shengguo

作者: Zhao, Shengguo;Li, Guodong;Zheng, Nan;Wang, Jiaqi;Yu, Zhongtang;Zhao, Shengguo;Li, Guodong;Zheng, Nan;Wang, Jiaqi;Yu, Zhongtang

作者机构:

关键词: Corn stover;Steam explosion;Rumen microbes;Saccharification;Colonization

期刊名称:BIORESOURCE TECHNOLOGY ( 影响因子:9.642; 五年影响因子:9.237 )

ISSN: 0960-8524

年卷期: 2018 年 253 卷

页码:

收录情况: SCI

摘要: The purpose of this study was to evaluate steam explosion as a pretreatment to enhance degradation of corn stover by ruminal microbiome. The steam explosion conditions were first optimized, and then the efficacy of steam explosion was evaluated both in vitro and in vivo. Steam explosion altered the physical and chemical structure of corn stover as revealed by scanning electron microscopy (SEM) and Fourier-transform infrared (FTIR) spectroscopy, respectively, and increased its cellulose content while decreasing hemicellulose content. Steam-exploded corn stover also increased release of reducing sugars, rate of fermentation, and production of volatile fatty acids (VFAs) in vitro. The steam explosion treatment increased microbial colonization and in situ degradation of cellulose and hemicellulose of corn stover in the rumen of dairy cows. Steam explosion may be a useful pretreatment of corn stover to improve its nutritional value as forage for cattle, or as feedstock for biofuel production.

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