期刊
BIORESOURCE TECHNOLOGY
卷 111, 期 -, 页码 49-54出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.01.173
关键词
Mesophilic microbial community; Lignocellulose degradation; Rice straw; Biogas; 16S rRNA clone library
资金
- Key Projects in the National Science & Technology Pillar Program [2012BAD12B05]
- Program for New Century Excellent Talents in Heilongjiang Provincial University [1153-NCET-003]
- Excellent Youth Foundation of Heilongjiang Scientific Committee [JC201002]
- Science Fund for Distinguished Young Scholars of Heilongjiang province [LBH-QO8O27]
- Heilongjiang Land Reclamation Bureau [HNK11A-10-01]
- Key Science and Technology Program of Heilongjiang Province [GA09B504-2]
- Scientific Research Staring Foundation for the Introduced Talents in HLBU [B2011-13]
A mesophilic lignocellulolytic microbial consortium BYND-5, established by successive subcultivation, was applied to enhance the biogas production. The degradation efficiency of BYND-5 for rice straw was more than 49.0 +/- 1.8% after 7 days of cultivation at 30 degrees C. Various organic compounds, including acetic acid, propionic acid, butyric acid and glycerin were detected during biodegradation. The diversity analysis of BYND-5 was conducted by ARDRA (Amplified ribosomal DNA restriction analysis) of the 16S rDNA clone library. Results indicated that bacterial groups represented in the clone library were the Firmicutes (5.96%), the Bacteroidetes (40.0%), Deferribacteres (8.94%), Proteobacteria (16.17%), Lentisphaerae (2.13%), Fibrobacteraceae (1.7%), and uncultured bacterium (25.1%). Additionally, the enhancement of biogas yield and methane content was directly related to the pretreatment with BYND-5. The microbial community identified herein is potential candidate consortium for the degradation of waste lignocellulose and enhancement of biogas production under the mesophilic temperature conditions. (C) 2012 Elsevier Ltd. All rights reserved.
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