據(jù)了解，這種食品酶是由轉(zhuǎn)基因里氏木霉菌株AR-852生產(chǎn)的，旨在用于烘焙過程、釀造過程、蒸餾酒精生產(chǎn)、葡萄酒和葡萄酒醋生產(chǎn)以及用于果汁生產(chǎn)的水果和蔬菜加工。

 

　　經(jīng)過評估，專家小組認為，在預期的使用條件下（蒸餾酒精生產(chǎn)除外），不能排除飲食暴露引起過敏和誘發(fā)反應(yīng)的風險，但這種情況發(fā)生的可能性很低。根據(jù)所提供的數(shù)據(jù)，評估小組得出結(jié)論，這種食品酶在預期使用條件下不會引起安全問題。部分原文報道如下：

 

　　The food enzyme cellulase (4-(1,3;1,4)-β-d-glucan 4-glucanohydrolase; EC 3.2.1.4) is produced with the genetically modified Trichoderma reesei strain AR-852 by AB Enzymes GmbH. The genetic modifications did not give rise to safety concerns. The food enzyme is considered free from viable cells of the production organism and its DNA. The food enzyme is intended to be used in five food manufacturing processes: baking processes, brewing processes, distilled alcohol production, wine and wine vinegar production, and fruit and vegetable processing for juice production. As residual amounts of total organic solids (TOS) are removed by distillation, dietary exposure was only calculated for the other four food processes. Dietary exposure to the food enzyme TOS was estimated to be up to 0.1 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 1,000 mg TOS/kg bw per day, the highest dose tested, which when compared with the estimated dietary exposure, results in a margin of exposure of at least 10,000. A search for similarity of the amino acid sequence of the food enzyme to known allergens was made and no match was found. The Panel considered that, under the intended conditions of use (other than distilled alcohol production) the risk of allergic sensitisation and elicitation reactions by dietary exposure cannot be excluded, but the likelihood for this to occur is considered to be 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.

 

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