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LC-MS/MS法测定大米和食用油中的黄曲霉毒素

Chinese Journal of Health Laboratory Technology(2013)

Cited 23|Views25
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Abstract
目的利用高效液相色谱—质谱联用仪(LC-MS/MS)建立大米和食用油中黄曲霉毒素(B1、B2、G2、G1)的快速定性定量分析方法,为粮油食品中黄曲霉毒素的快速检测提供方法依据。方法选用Agilent ZORBAX Eclipse Plus C18色谱柱,以10 mmol/L甲酸铵-0.1%甲酸:甲醇为流动相,采用梯度洗脱进行分离。样品用甲醇水提取后,经过免疫亲和柱固相萃取,多重反应监测(MRM)方式检测。结果 AFG1和AFB1在1.0 ng/ml~21.0 ng/ml、AFG2和AFB2在0.3 ng/ml~6.5 ng/ml呈良好线性关系,平均回收率50%~92%。结论本方法无需衍生,灵敏度高,特异性强,可用于粮油食品中黄曲霉毒素的快速检测。
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Key words
LC-MS /MS,Aflatoxin,Immnuoaffinity
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