Effective degradation of aflatoxin B-1 using a novel thermophilic microbial consortium TADC7
文献类型： 外文期刊
作者： Wang, Yi 1 ; Zhao, Chunxia 1 ; Zhang, Dongdong 3 ; Zhao, Mingming 1 ; Zheng, Dan 1 ; Lyu, Yucai 2 ; Cheng, Wei 1 ; Guo, P 1 ;
作者机构： 1.Hubei Acad Agr Sci, Inst Agr Prod Proc & Nucl Agr Technol Res, Wuhan 430064, Peoples R China
2.Three Gorges Univ, Coll Biol & Pharm, Yichang 443002, Peoples R China
3.Zhejiang Univ, Ocean Coll, Inst Marine Biol, Zhoushan 316021, Zhejiang, Peoples R China
4.China Agr Univ, Coll Agron & Biotechnol, Beijing 100193, Peoples R China
关键词： Aflatoxin B1;Biodegradation;Microbial consortium;Thermophilic
期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）
ISSN：
年卷期：
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收录情况： SCI
摘要： We constructed a novel thermophilic microbial consortium, TADC7, with stable and efficient aflatoxin B-1 (AFB(1)) degradation activity. The microbial consortium degraded more than 95% of the toxin within 72 h when cultured with AFB(1), and the optimum temperature was 55-60 degrees C. TADC7 tolerated high doses of AFB(1), with no inhibitory effects up to 5000 mu g L (1) AFB(1); moreover, the degradation kinetics fit well with the Monod model. The proteins or enzymes in the TADC7 cell-free supernatant played a major role in AFB(1) degradation. AFB1 degradation by the cell-free supernatant was stable up to 90 degrees C, with an optimal pH of 8-10. We performed 16S rRNA sequencing to determine TADC7 community structure dynamics; the results indicated that Geobacillus and Tepidimicrobium played major roles in AFB1 degradation. (C) 2016 Elsevier Ltd. All rights reserved.
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