期刊
FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT
卷 33, 期 10, 页码 1620-1626出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/19440049.2016.1228126
关键词
Beauvericin; enniatin; deoxynivalenol; wheat; corn
The contamination levels of beauvericin and four enniatins, A, A(1), B and B-1, in 207 samples of wheat flour and corn grits on the Japanese market were determined by an analytical method based on LC-MS/MS. The toxins were extracted from samples with acetonitrile-water (85:15, v/v) and then purified with C18 cartridges. The method was validated in a single laboratory using spiked samples at two levels; the recovery of the five toxins ranged from 91.1% to 113.8%. Enniatin B was frequently detected in imported wheat flour (81.8%) and domestic wheat flour (85.6%), and the highest concentration of enniatin B was present in a domestic wheat sample (633gkg(-1)). In corn grits, beauvericin was found in 34% of the samples, but enniatins were not detected at all. The maximum concentration of beauvericin in corn grits was 26.1gkg(-1). Deoxynivalenol and nivalenol in the same samples were determined by a method using an immunoaffinity column. Co-contamination of deoxynivalenol and enniatins was observed in 61% of the imported wheat samples and in 58% of the domestic wheat samples. These results suggest the need for a risk assessment for cyclic depsipeptide mycotoxins in Japan and a study on the synergistic effect of deoxynivalenol and enniatins.
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