文献类型： 外文期刊
作者： Wang, Yanxia 1 ; Wang, Gang 2 ; Dai, Yijun 1 ; Wang, Yu 1 ; Lee, Yin-Won 2 ; Shi, Jianrong 2 ; Xu, Jianhong 2 ;
作者机构： 1.Nanjing Normal Univ, Coll Life Sci, Jiangsu Engn & Technol Res Ctr Industrializat Mic, Jiangsu Key Lab Microbes & Funct Genom, Nanjing, Jiangsu, Peoples R China
2.Jiangsu Acad Agr Sci, Jiangsu Key Lab Food Qual & Safety,Collaborat Inn, State Key Lab Cultivat Base,Minist Agr & Rural Af, Minist Sci & Technol,Key Lab Agroprod Safety Risk, Nanjing, Jiangsu, Peoples R China
3.Seoul Natl Univ, Dept Agr Biotechnol, Seoul, South Korea
4.Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang, Jiangsu, Peoples R China
关键词： deoxynivalenol; bacterial consortium; biodegradation; 3-keto-DON; mycotoxin
期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.64； 五年影响因子：6.32 ）
ISSN： 1664-302X
年卷期： 2020 年 10 卷
页码：
收录情况： SCI
摘要： Deoxynivalenol (DON), a common mycotoxin of type B trichothecene, is produced mainly by several Fusarium species. DON causes great losses in farming and poses severe safety risks to human and animal health. Thus, DON contamination in cereals and DON toxicity are of worldwide concern. In this study, we screened the bacterial consortium C20, which efficiently degraded almost 70 mu g ml(-1) DON within 5 days. The bacterial consortium also had the ability to degrade 15-acetyl-DON, 3-acetyl-DON, and T-2 toxin. The bacterial consortium C20 was able to degrade DON under a wide range of pH and temperature conditions. The optimal temperature and pH for DON degradation were 30 degrees C and pH 8.0, respectively. The bacterial consortium C20 comprised of different bacterial genera, and several strains were found to significantly increase when cultured in Mineral Medium with 100 mu g ml(-1) DON based on the analysis of the sequences of the hypervariable V3-V4 region of the 16S rRNA gene. 3-keto-DON was confirmed as a degradation product of DON by liquid chromatography/time-of-flight/mass spectrometry (LC-TOF-MS) and nuclear magnetic resonance (NMR) analyses. The results indicated that the bacterial consortium C20 is a potential candidate for the biodegradation of DON in a safe and environmentally friendly manner.
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