當前時訊：歐盟評估非轉基因黑曲霉菌株NZYM-BO生產的葡聚糖1，4-α-葡萄糖苷酶的安全性

2023-03-31 11:07:44 來源：食品伙伴網作者：

(資料圖)

2023年3月30日，歐盟食品安全局就一種食品酶葡聚糖1，4-α-葡萄糖苷酶（glucan 1,4-α-glucosidase）的安全性評價發布意見。

據了解，這種食品酶是由非轉基因黑曲霉菌株NZYM-BO生產的，旨在用于七種食品制造過程：烘焙過程、釀造過程、谷物加工、蒸餾酒精生產、果汁生產中的水果和蔬菜加工、乳制品類似物的生產以及生產葡萄糖漿和其他淀粉水解產物的淀粉加工。

經過評估，專家小組認為，在預期的使用條件下，不能排除飲食暴露引起過敏反應的風險（蒸餾酒精生產除外），但這種情況發生的可能性很低。根據所提供的數據，小組得出結論，該食品酶在預期的使用條件下不會引起安全隱患。部分原文報道如下：

The food enzyme glucan 1,4-α-glucosidase (4-α-d-glucan α-glucohydrolase; EC 3.2.1.3) is produced with the non-genetically modified Aspergillus niger strain NZYM-BO by Novozymes A/S. It was considered free from viable cells of the production organism. It is intended to be used in seven food manufacturing processes: baking processes, brewing processes, cereal-based processes, distilled alcohol production, fruit and vegetable processing for juice production, production of dairy analogues and starch processing for the production of glucose syrups and other starch hydrolysates. Since residual amounts of total organic solids (TOS) are removed by distillation and during starch processing, dietary exposure was not calculated for these two food manufacturing processes. For the remaining five food manufacturing processes, dietary exposure to the food enzyme–TOS was estimated to be up to 2.97?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 1,920?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 646. A search for the similarity of the amino acid sequence of the food enzyme to known allergens was made and one match with a respiratory allergen was found. The Panel considered that, under the intended conditions of use, the risk of allergic reactions by dietary exposure to this food enzyme cannot be excluded (except for distilled alcohol production), but the likelihood is low. 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.

編輯：qysb005

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