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Biodegradation of deoxynivalenol and its derivatives by Devosia insulae A16

文献类型： 外文期刊

作者： Wang, Gang 1 ; Wang, Yanxia 1 ; Ji, Fang 1 ; Xu, Limei 1 ; Yu, Mingzheng 2 ; Shi, Jianrong; Xu, Jianhong;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Food Safety & Nutr,Minist Agr,Key Lab Agropr, Key Lab Food Qual & Safety Jiangsu Prov,State Key, Key Lab Control Technol & Stand Agroprod Qual & S, Nanjing 210014, Jiangsu, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Food Safety & Nutr,Minist Agr,Key Lab Agropr, Key Lab Food Qual & Safety Jiangsu Prov,State Key, Key Lab Control Technol & Stand

关键词： Deoxynivalenol; DON derivatives; Biodegradation; 3-keto-DON; Devosia insulae

期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）

ISSN： 0308-8146

年卷期： 2019 年 276 卷

页码：

收录情况： SCI

摘要： Deoxynivalenol (DON), a notorious mycotoxin mainly found in Fusarium-contaminated crops, causes great loss in livestock farming and severe safety risks to human health. Here we report the isolation of a Gram-negative bacterial strain with effective biodegrading abilities on DON and its derivatives including 3-acetyl-DON and 15-acetyl-DON. The strain was identified as Devosia insulae A16 on the basis of morphological and physiological characteristics and 16S rRNA-based phylogenetic analysis. D. insulae A16 was able to degrade 88% of 20 mg/l DON within 48 h under aerobic conditions at 35 degrees C and neutral pH. The major degradation product of DON and its derivatives was 3-keto-DON by the oxidation of the hydroxyl group at C-3. Both 3-acetyl-DON and 15-acetyl-DON underwent a deacetylation reaction to generate DON prior to the degradation to 3-keto-DON. The results provide the potential use of D. insulae A16 as a biodegradation agent to control DON contamination in cereals.

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