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    歐盟評估非轉(zhuǎn)基因桔綠木霉菌株C1-5-2生產(chǎn)的纖維素1,4-β-纖維二糖苷酶的安全性
    日期:2025-04-08  來源:食品伙伴網(wǎng)
       食品伙伴網(wǎng)訊  2025年4月4日,歐盟食品安全局就一種食品酶纖維素1,4-β-纖維二糖苷酶(cellulose 1,4-β-cellobiosidase)的安全性評價發(fā)布意見。
     
      據(jù)了解,這種食品酶是由非轉(zhuǎn)基因桔綠木霉菌株C1-5-2生產(chǎn)的,旨在用于十種食品生產(chǎn)過程。
     
      經(jīng)過評估,專家小組認(rèn)為,在預(yù)期的使用條件下,不能排除飲食暴露引起過敏反應(yīng)的風(fēng)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(yù)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 cellulose 1,4-β-cellobiosidase (non-reducing end) (EC 3.2.1.91) is produced with the non-genetically modified Trichoderma citrinoviride strain C1-5-2 by Shin Nihon Chemical Co., Ltd. The food enzyme was considered free from viable cells of the production organism. It is intended to be used in ten food manufacturing processes. Since residual amounts of food enzyme-total organic solids (TOS) are removed in two processes, dietary exposure was calculated only for the remaining eight food manufacturing processes. It was estimated to be up to 0.568 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 1962 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 3454. A search for the homology of the amino acid sequence of the cellulose 1,4-β-cellobiosidase (non-reducing end) to known allergens was made and no match was found. The Panel considered that a risk of allergic reactions upon dietary exposure to the food enzyme cannot be excluded, 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.
     
      本文由食品伙伴網(wǎng)食品資訊中心編輯,有任何疑問,請聯(lián)系news@foodmate.net。
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