Occurrence and exposure assessment of multiple mycotoxins in dried fruits based on liquid chromatography-tandem mass spectrometry

文献类型： 外文期刊

第一作者： Han, Z.

作者： Han, Z.;Dong, M.;Han, W.;Shen, Y.;Nie, D.;Shi, W.;Zhao, Z.;Han, Z.

作者机构：

关键词： mycotoxins;pistachios;dried longans;raisins;dried dates

期刊名称：WORLD MYCOTOXIN JOURNAL （ 影响因子：3.353； 五年影响因子：3.108 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： A reliable analytical method based on liquid chromatography-tandem mass spectrometry was developed for simultaneous determination of aflatoxin B-1 (AFB(1)), aflatoxin B-2 (AFB(2)), aflatoxin G(1), aflatoxin G(2), ochratoxin A (OTA), deoxynivalenol, T-2 and HT-2 toxin, and zearalenone (ZEA) in various dried fruits. A simple one-step sample extraction without using clean-up cartridges made the established method less labour consuming and less expensive, while optimisation of the several important MS/MS parameters, i.e. the scan time and run segments, ensured its sensitivity and selectivity. After careful validation of the method by determining the linearity (R-2>0.99), recovery (77.8-115.9%), precision (relative standard deviation <= 19.5%) and sensitivity (limits of quantification in the range of 0.1-10 mu g/kg), a survey of 125 dried fruit samples including 25 pistachios, 28 dried longans, 32 raisins and 40 dried dates randomly collected from different markets in Shanghai, China, was performed. Results revealed that 32.0% of samples were contaminated with different mycotoxins, among which, OTA was the most frequent contaminant with the incidence of 29.6% attaining the concentration levels in the range of 0.4-212.6 mu g/kg. ZEA was positively found in 2 pistachio samples with the concentrations of 84.9 mu g/kg and 426.9 mu g/kg. Trace amounts of AFB(1) (0.8 mu g/kg) and AFB(2) (0.2 mu g/kg) were also observed in one pistachio sample and one dried longan sample, respectively. To the best of our knowledge, this is the first report to reveal the real situations of mycotoxin contaminations in various dried fruits in China.

分类号： Q93

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