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目的了解市售谷物、坚果和食用油等7类食品中的黄曲霉毒素B1、B2、G1、G2污染情况。方法建立高效液相色谱-串联质谱法检测黄曲霉毒素B_1、B_2、G_1、G_2。结果共检测266份样品,黄曲霉毒素的总检出率为4.5%,最高总含量为72.8μg/kg。在7类样品中,以花生油、玉米粉和花生受污染情况较为严重,其中,花生油的检出率为75.0%,明显高于其他类食品。所采集的266份样品黄曲霉毒素总检出率为:黄曲霉毒素B_1(4.5%)>黄曲霉毒素G_1(0.8%)>黄曲霉毒素B_2(0.4%)>黄曲霉毒素G_2(0.0%)。4种黄曲霉毒素中以黄曲霉毒素B_1的污染情况最为严重,共检出1份花生样品含量为58.4μg/kg,为黄曲霉毒素B_1含量超标样品。结论黄曲霉毒素在食品中的污染情况仍然存在,相关管理部门应加强监控,以保证消费者的身体健康。
Objective To understand the contamination of aflatoxins B1, B2, G1 and G2 in seven kinds of foods such as cereals, nuts and edible oils. Methods The aflatoxins B_1, B_2, G_1, G_2 were detected by high performance liquid chromatography-tandem mass spectrometry. Results A total of 266 samples were detected. The total detection rate of aflatoxins was 4.5% and the highest total content was 72.8μg / kg. Among seven samples, peanut oil, corn flour and peanut were polluted severely. Among them, the detection rate of peanut oil was 75.0%, which was significantly higher than other kinds of food. The total detection rates of aflatoxins in the 266 samples were aflatoxin B 1 (4.5%), aflatoxin G 1 (0.8%), aflatoxin B 2 (0.4%), aflatoxin G 2 (0.0%), . Among the four aflatoxins, the contamination with aflatoxin B_1 was the most serious. One peanut sample was found to contain 58.4 μg / kg, which was considered as an aflatoxin B 1 exceeding the standard. Conclusion Aflatoxins in food contamination still exist, the relevant management departments should strengthen the monitoring to ensure the health of consumers.