山东省花生产区土壤和荚果中黄曲霉菌及其毒素污染状况调查

为了解2018年山东省花生主产区土壤及收获后花生荚果黄曲霉菌及黄曲霉毒素的污染情况，在烟台、青岛、临沂、泰安、枣庄及菏泽等花生主要产区进行土壤、花生荚果的采样，对土壤、荚果果壳、花生籽仁的黄曲霉菌检出率进行统计并对籽仁中黄曲霉毒素的含量进行测定。结果表明：不同产区土壤中黄曲霉菌的检出率为3.33%~33.33%；花生果壳中黄曲霉菌的检出率为10.89%~27.78%；花生籽仁中黄曲霉菌的检出率为3.11%~11.56%；花生籽仁中黄曲霉毒素的浓度为5.01~26.80 μg/kg。数据分析得出：花生籽仁中黄曲霉毒素的含量与土壤中黄曲霉菌的检出率呈极强的相关性；与花生果壳和籽仁中黄曲霉菌的检出率呈中等程度相关。本研究对解析花生种植区黄曲霉菌及黄曲霉毒素污染发生原因，精准预警与防控，提高农产品质量安全有重要意义。

Aspergillus flavus and aflatoxins contamination investigation in soil of Shandong peanut production area and peanut pods

In order to determine the contamination of Aspergillus flavus and aflatoxins in the soil and harvested peanut pods, we collected the soil samples and peanut pods from main peanut production areas of Shandong Prov? ince as following: Yantai, Qingdao, Linyi, Taian, Zaozhuang and Heze. The A. flavus contamination sample percent? ages of the soil, peanut pod and peanut seed were calculated and the content of aflatoxin in peanut seeds was quanti? fied. The results illustrated that 3.33-33.33% soil samples from different area were contaminated by A. flavus while 10.89-27.78%, 3.11-11.56% of the peanut pods and peanut seeds were contaminated, respectively. The content of aflatoxin in peanut seeds was 5.01-26.80 μg/kg. According to the data analyzed by SPSS, we found that there was strong correlation (r = 0.896) between aflatoxin content from peanut seeds and percentages of A. flavus from soil sam? ples while medium strong correlation (r =0.575; r = 0.427) existed between aflatoxin content in peanut seeds and in? fection percentages of A. flavus from peanut pods and seeds samples, respectively. Our research will provide a base