Enhanced methane production from wheat straw with the assistance of lignocellulolytic microbial consortium TC-5
文献类型： 外文期刊
作者： Kong, Xiangping 1 ; Du, Jing 1 ; Ye, Xiaomei 1 ; Xi, Yonglan 1 ; Jin, Hongmei 1 ; Zhang, Min 1 ; Guo, Dong 2 ;
作者机构： 1.Jiangsu Acad Agr Sci, Circular Agr Res Ctr, East China Sci Observing & Expt Stn Dev & Utiliza, Minist Agr,Biomass Convers Lab, Nanjing 210014, Jiangsu, Peoples R China
2.Nanjing Te
关键词： Lignocellulose degradation; Microbial consortium; Wheat straw; Methane; Anaerobic digestion
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 263 卷
页码：
收录情况： SCI
摘要： The major obstacle of methane production from lignocellulose lies in the inefficient deconstruction of biomass. In this study, an anaerobic microbial consortium TC-5 was enriched with high lignocellulose-degradation capacity to enhance methane production from wheat straw. High degradation ratio of 45.7% of un-pretreated wheat straw was achieved due to a multi-species lignocellulolytic enzyme presented in the crude culture supernatant. The specific activity of xylanase, xylan esterase and beta-xylosidase reached the highest level of 4.23, 0.15 and 0.48 U/mg, while cellobiohydrolase, endoglucanase and beta-glucosidase showed the highest specific activity of 0.36, 0.22 and 0.41 U/mg during 9 days' degradation. Inoculation of TC-5 in digestion sludge during anaerobic digestion of wheat straw resulted in remarkable enhancement of 22.2% and 36.6% in methane yield under mesophilic and thermophilic conditions, respectively. This work demonstrates the potential of TC-5 for enhancing the production of biogas and other chemicals through biomass based biorefinery.
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