| Literature DB >> 35032191 |
Yunpeng Guan1, Hongyu Zhu1, Yuan Zhu1, Hemei Zhao1, Longhua Shu1, Jian Song1, Xue Yang1, Zhihai Wu2, Lei Wu1, Meiying Yang3.
Abstract
In the present study, 27 bacterial strains were isolated from environmental samples and screened for higher lignocellulose-degrading efficiency. The best degrader was combined in pairs with 14 strains with high β-glucosidase activity to formulate a consortium. Microbial consortium 625 showed high lignocellulose degradation efficiency. ZJW-6 with low β-glucosidase activity and the best lignocellulose decomposer was identified as a member of Cellulomonas. Consortium 625 composed of ZJW-6 and DA-25, an Acinetobacter, showed the highest degradation rate (57.62%) under optimized conditions. The DA-25 filtrate promoted ZJW-6 growth, upregulating the activity of key lignocellulose-degrading enzymes, including β-glucosidase, endoglucanase, xylanase, laccase, and lignin peroxidase. ZJW-6 and DA-25 worked in a subordination manner when co-cultivated. ZJW-6 acted as the major decomposer whose growth and enzymatic activities were promoted by DA-25. This study proposes a novel microbial consortium with improved lignocellulose degradation efficiency and reduce the C:N ratio of lignocellulose materials, which can enhance bioenergy production.Entities:
Keywords: Acinetobacter; Cellulomonas; Enzyme activity complementation; Induction test; Lignocellulose; Microbial consortium
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Year: 2022 PMID： 35032191 DOI： 10.1007/s00203-021-02748-y
Source DB: PubMed Journal: Arch Microbiol ISSN： 0302-8933 Impact factor: 2.552