食品伙伴網(wǎng)訊    2020年5月13日，歐盟食品安全局（EFSA）發(fā)布關(guān)于食品中赭曲霉毒素A（Ochratoxin A）的風(fēng)險(xiǎn)評(píng)估。

 

　　據(jù)了解，赭曲霉毒素A是由曲霉屬和青霉屬菌株產(chǎn)生的一種有毒真菌次級(jí)代謝產(chǎn)物，具有很強(qiáng)的肝臟毒性和腎臟毒性，并有致畸、致突變和致癌作用，是各種食物中的污染物。部分原文報(bào)道如下：

 

　　The European Commission asked EFSA to updat their 2006 opinion on ochratoxin A （OTA） in food. OTA is produced by fungi of the genus Aspergillus and Penicillium and found as a contaminant in various foods. OTA causes kidney toxicity in different animal species and kidney tumours in rodents. OTA is genotoxic both in vitro and in vivo; however, the mechanisms of genotoxicity are unclear. Direct and indirect genotoxic and non‐genotoxic modes of action might each contribute to tumour formation. Since recent studies have raised uncertainty regarding the mode of action for kidney carcinogenicity, it is inappropriate to establish a health‐based guidance value （HBGV） and a margin of exposure （MOE） approach was applied. For the characterisation of non‐neoplastic effects, a BMDL10 of 4.73 μg/kg body weight （bw） per day was calculated from kidney lesions observed in pigs. For characterisation of neoplastic effects, a BMDL10 of 14.5 μg/kg bw per day was calculated from kidney tumours seen in rats. The estimation of chronic dietary exposure resulted in mean and 95th percentile levels ranging from 0.6 to 17.8 and from 2.4 to 51.7 ng/kg bw per day, respectively. Median OTA exposures in breastfed infants ranged from 1.7 to 2.6 ng/kg bw per day, 95th percentile exposures from 5.6 to 8.5 ng/kg bw per day in average/high breast milk consuming infants, respectively. Comparison of exposures with the BMDL10 based on the non‐neoplastic endpoint resulted in MOEs of more than 200 in most consumer groups, indicating a low health concern with the exception of MOEs for high consumers in the younger age groups, indicating a possible health concern.

 

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