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    歐盟評(píng)估轉(zhuǎn)基因里氏木霉菌株DP-Nyq99生產(chǎn)的?脯氨酰寡肽酶的安全性

    放大字體  縮小字體 時(shí)間:2025-05-08 10:33 來(lái)源:食品伙伴網(wǎng) 作者: 澤夕   
    核心提示:2025年5月7日,歐盟食品安全局就一種食品酶?脯氨酰寡肽酶(prolyl oligopeptidase)的安全性評(píng)價(jià)發(fā)布意見(jiàn)。
       食品伙伴網(wǎng)訊  2025年5月7日,歐盟食品安全局就一種食品酶‌脯氨酰寡肽酶(prolyl oligopeptidase)的安全性評(píng)價(jià)發(fā)布意見(jiàn)。
     
      據(jù)了解,這種食品酶是由轉(zhuǎn)基因里氏木霉菌株DP-Nyq99生產(chǎn)的,旨在用于谷物和其他谷物的加工,以生產(chǎn)釀造產(chǎn)品。
     
      經(jīng)過(guò)評(píng)估,專家小組認(rèn)為,在預(yù)期的使用條件下,不能排除通過(guò)飲食接觸引起過(guò)敏反應(yīng)的風(fēng)險(xiǎn),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),小組得出結(jié)論,該食品酶在預(yù)期的使用條件下不會(huì)引起安全問(wèn)題。部分原文報(bào)道如下:
     
      The food enzyme prolyl oligopeptidase (EC 3.24.21.26) is produced with the genetically modified Trichoderma reesei strain DP-Nyq99 by Genencor international B.V. The genetic modifications do not give rise to safety concerns. The food enzyme was considered free from viable cells of the production organism and its DNA. The food enzyme is intended to be used in the processing of cereals and other grains for the production of brewed products. Dietary exposure was estimated to be up to 0.041 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 1000 mg TOS/kg body weight (bw) per day, the highest dose tested, which when compared with the estimated dietary exposure, results in a margin of exposure of at least 24,390. A search for the homology of the amino acid sequence of the prolyl oligopeptidase 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 that 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.
     
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    日期:2025-05-08
     
     
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