文献类型: 外文期刊
作者: Ji, Fang 1 ; Li, Hua 1 ; Xu, Jianhong 1 ; Shi, Jianrong 1 ;
作者机构: 1.Jiangsu Acad Agr Sci, Inst Food Safety, Key Lab Agrofood Safety & Qual,Minist Agr, Key Lab Food Qual & Safety Jiangsu Prov State Key, Nanjing 210014, Jiangsu, Peoples R China
关键词: Deoxynivalenol (DON);immunoassay;ELISA;Fusarium graminearum
期刊名称:TOXINS ( 影响因子:4.546; 五年影响因子:4.8 )
ISSN: 2072-6651
年卷期: 2011 年 3 卷 8 期
页码:
收录情况: SCI
摘要: Deoxynivalenol (DON), one of the trichothecene mycotoxins, is a worldwide contaminant of wheat and barley, especially when infected by Fusarium graminearum, the causative agent of an epidemic wheat disease called Fusarium Head Blight. Because of the high risk of DON ingestion and the possibility of frequent exposure, it is important to develop a rapid and highly sensitive method for easy identification and quantification of DON in grain samples. In this study, we have developed an indirect competitive enzyme-linked immunosorbent assay (ELISA) to detect DON in wheat. We conjugated 3-O-Hemisuccinyl-DON (3HS-DON) to Bovine serum albumin (BSA) and Ovalbumin (OVA), and obtained DON-specific mice antisera. The indirect competitive ELISA revealed that the optimal concentration of mice serum and the coated antigen was 1/1600 and 1/1500, respectively. The antiserum cross-reacted with the trichothecenes 3-acetyl-DON and T-2 toxin, reaching about 55.2% and 6.3%, respectively, as compared with DON. Results showed that the assay could be performed satisfactorily using an extraction buffer containing less than 15% methanol. Recovery from DON was 82-93% in grains. The linear detection range of DON in grains was between 0.01 and 100 mu g/mL.
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