基质分散固相萃取-液质联用法测定食用香精香料中的黄曲霉素类真菌毒素
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摘要
建立了高效液相色谱-串联质谱法(HPLC-MS/MS)同时测定食用香精中的四种黄曲霉素类真菌毒素的方法。食用香精样品用甲醇-水(84:16,V/V)萃取,提取液经ODS C18分散固相萃取净化,采用HPLC-MS/MS进行色谱柱分析。待测物标准品在0.1~30μg/L浓度范围内线性关系良好,相关系数r>0.991;B1、B2、G1和G2定量限(LOQ)分别为0.28、0.36、0.41和0.22μg/kg,回收率在61.4%~116.9%之间,相对标准偏差(RSD)在4.5%~11.9%之间。结果表明,该方法灵敏度高、选择性强且稳定性好,可用于食用香精中黄曲霉素类真菌毒素的检测。
An easy method for the determination of Aflatoxin class mycotoxins in edible essence by highperformance liquid chromatography coupled with tandem mass spectrometry(HPLC-MS/MS) has beendeveloped. Edible essence samples were extracted with methanol-water(84:16, V/V) and then it was purified by ODS C18 matrix solid-phase dispersion, and the extracts were determined by HPLC-MS/MS. The good correlation coefficients(r>0.991) of thefour aflatoxins were obtained within their respective linear ranges(0.1~30μg/L). The determinationlimits for 4 kinds of aflatoxins were 0.28、 0.36、 0.41、0.22 μg/kg,the average recoveries were between61.4 %~116.9%, the relative standard deviations(RSD) were in the range from 4.5% to11.9 %. The resultsindicated that the developed method is sensitive, fast, accurate, and can be applied for the determinationof theaflatoxin class mycotoxins in edible essence samples.
引文
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