我国大陆地区食品中柄曲霉素和黄曲霉毒素B1的污染调查

Investigation on the contamination of sterigmatocystin and aflatoxin B1 in food from mainland China

中文关键词:  储藏米粉  黄曲霉毒素B1  柄曲霉素

英文关键词:storage rice flour  aflatoxin B1  sterigmatocystin

中文摘要:

      目的 了解我国食品中黄曲霉毒素B1(aflatoxin B1, AFB1)和柄曲霉素(sterigmatocystin, STC)的污染情况。方法 对采集自我国大陆地区的1137份食品样品以及315份室温储存1~2年的米粉样品, 采用高效液相色谱-串联质谱方法分析其中AFB1和STC的含量, 采用Pearson等级相关对AFB1和STC的相关性进行分析。结果 谷物类和谷物基加工品AFB1检出率分别为0.2%和7.8%, 含量范围为0.03~6.40 μg/kg。坚果检出率为8.7%, 其中有2份样品中AFB1含量超标, 啤酒中AFB1的检出率为0%。STC检出率为12.9%, 平均含量为0.39 μg/kg。相比于所采集的超市和农贸市场样品, 米粉样品中AFB1和STC的检出率均较高, 分别为4.4%和84.8%, 平均含量为0.84 μg/kg和2.38 μg/kg。结论 我国大陆地区食品中STC的检出率较高, 尤其是储存多年的米粉样品中, 需要有关部门加强监管, 并规定STC的限量标准。

英文摘要:

      Objective To investigate the contamination of aflatoxin B1 (AFB1) and sterigmatocystin (STC) in food from China. Methods A total of 1137 food samples collected from mainland of China and 315 rice flour samples stored at room temperature for 1-2 years were detected for AFB1 and STC by high performance liquid chromatography-tandem mass spectrometry. Pearson level correlation was used to analyze the correlation between the two mycotoxins. Results The detection rates of AFB1 in cereals and cereal based processed products were 0.2% and 7.8% respectively, and the content range was 0.03?6.40 μg/kg. The detection rate of nuts was 8.7%, two of which exceeded the limits and 0% for beer was contaminated by AFB1. STC was detected in 12.9% of all samples with average content 0.39 μg/kg. Compared with samples from supermarkets and farmer-market, the detection rate of AFB1 and STC was higher with 4.4% and 84.8%, and the mean levels were 0.84 μg/kg and 2.38 μg/kg. Conclusion The detection rate for STC in food from mainland of China is higher, especially in storage rice flour samples for many years. It is necessary for relevant departments to strengthen supervision and stipulate the limit standard of STC