文献类型： 外文期刊
第一作者： Zhao, Yarong
作者： Zhao, Yarong;Zeng, Rui;Chen, Peirong;Liu, Xiangxiang;Wang, Xu;Zhao, Yarong;Zeng, Rui;Chen, Peirong;Liu, Xiangxiang;Wang, Xu;Wang, Qiongshan
作者机构：
关键词： Aflatoxin B-1; sterigmatocystin; QuEChERS; HPLC-MS; MS; tea
期刊名称：FOOD ADDITIVES & CONTAMINANTS PART B-SURVEILLANCE （ 影响因子：3.407； 五年影响因子：3.35 ）
ISSN： 1939-3210
年卷期：
页码：
收录情况： SCI
摘要： Tea is one of the most popular beverage in the world and may be contaminated by fungi and mycotoxins during processing. To analyse aflatoxin B-1 (AFB(1)) and sterigmatocystin (STC) in three types of tea, a simple, fast, sensitive and reliable method of these two myxotoxins was developed. Recoveries obtained ranged from 95.9% to 118.0% and the RSDs were between 0.3% and 11.2%. The range of LODs was 0.2-0.45 mu g/kg for AFB(1) and 0.04-0.12 mu g/kg for STC. The range of LOQs was 0.67-1.73 mu g/kg for AFB(1) and 0.13-0.40 mu g/kg for STC. The optimised procedure was applied to analyse 126 tea samples randomly collected from different markets in China. AFB(1) was not detected, but STC was determined in 17 samples with concentrations ranging from 0.13 to 4.48 mu g/kg. The detection rate of STC was 5%, 8.9% and 33.3% in black tea, green tea and Oolong tea, respectively.
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