Simultaneous Lateral Flow Immunoassay for Multi-Class Chemical Contaminants in Maize and Peanut with One-Stop Sample Preparation
文献类型： 外文期刊
第一作者： Wang, Du
作者： Wang, Du;Zhu, Jianguo;Zhang, Zhaowei;Zhang, Qi;Zhang, Wen;Yu, Li;Jiang, Jun;Chen, Xiaomei;Wang, Xuefang;Li, Peiwu;Wang, Du;Zhang, Wen;Zhang, Qi;Zhang, Wen;Yu, Li;Jiang, Jun;Chen, Xiaomei;Wang, Xuefang;Li, Peiwu;Zhang, Qi;Li, Peiwu;Li, Peiwu
作者机构：
关键词： simultaneous lateral flow immunoassay; multi-class chemical contaminants; aflatoxin B-1; zearalenone; chlorothalonil; maize and peanut
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： 2019 年 11 卷 1 期
页码：
收录情况： SCI
摘要： Multi-class chemical contaminants, such as pesticides and mycotoxins, are recognized as the major risk factors in agro products. It is thus necessary to develop rapid and simple sensing methods to fulfill the on-site monitoring of multi-class chemical contaminants with different physicochemical properties. Herein, a lateral flow immunoassay via time-resolved fluorescence was developed for the rapid, on-site, simultaneous, and quantitative sensing aflatoxin B-1 (AFB(1)), zearalenone (ZEA), and chlorothalonil (CTN) in maize and peanut. The sample preparation was optimized to a single step, combining the grinding and extraction. Under optimal conditions, the sensing method lowered the limits of detection (LOD) to 0.16, 0.52, and 1.21 mu g/kg in maize and 0.18, 0.57, and 1.47 mu g/kg in peanut with an analytical range of 0.48-20, 1.56-200, and 3.63-300 mu g/kg for AFB(1), ZEA and CTN, respectively. The protocol could be completed within 15 min, including sample preparation and lateral flow immunoassay. The recovery range was 83.24-110.80%. An excellent correlation was observed between this approach and high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) for mycotoxins and gas chromatography-tandem mass spectrometry (GC-MS/MS) for pesticide in maize and peanut. This work could be applied in on-site multi-class sensing for food safety.
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