欧盟评估非转基因桔青霉菌株NP 11–15生产的核酸内切酶的安全性

 　　  2024年10月10日，欧盟食品安全局就一种食品酶核酸内切酶（endonuclease）的安全性评价发布意见。　　
　　据了解，这种食品酶是由非转基因桔青霉菌株NP 11–15生产的，旨在用于酵母和酵母产品的加工。
　　
　　经过评估，专家小组认为，在预期的使用条件下，不能排除通过饮食接触引起过敏反应的风险，特别是对青霉菌过敏的人。根据所提供的数据，小组得出结论，该食品酶在预期的使用条件下不会引起安全问题。部分原文报道如下：
　　
　　The food enzyme endonuclease (Aspergillus nuclease S1; EC 3.1.30.1) is produced with the non-genetically modified Penicillium citrinum strain NP 11–15 by Shin Nihon Chemical Co., Ltd. The food enzyme is free from viable cells of the production organism. It is intended to be used in the processing of yeast and yeast products. Dietary exposure to the food enzyme–total organic solids (TOS) was estimated to be up to 0.006 mg TOS/kg body weight (bw) per day in European populations. Genotoxicity tests did not indicate a safety concern. The systemic toxicity was assessed by means of a repeated dose 90-day oral toxicity study in rats. The Panel identified a no observed adverse effect level of 1010 mg TOS/kg bw per day, the highest dose tested, which when compared with the estimated dietary exposure, resulted in a margin of exposure of at least 168,333. A search for homology of the amino acid sequence of the food enzyme to known allergens was made and no match was found. The Panel considered that the risk of allergic reactions by dietary exposure cannot be excluded, especially for individuals allergic to Penicillium. However, the likelihood of such reactions will not exceed the likelihood of allergic reactions to Penicillium. based on the data provided, the Panel concluded that this food enzyme does not give rise to safety concerns under the intended conditions of use.