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    當(dāng)前位置: 首頁 » 食品資訊 » 外訊導(dǎo)讀 » 歐盟評(píng)估轉(zhuǎn)基因琉球曲霉菌株FLZSC生產(chǎn)的果膠酯酶的安全性

    歐盟評(píng)估轉(zhuǎn)基因琉球曲霉菌株FLZSC生產(chǎn)的果膠酯酶的安全性

    放大字體  縮小字體 時(shí)間:2022-12-08 11:02 來源:食品伙伴網(wǎng) 作者: 澤夕   
    核心提示:2022年12月7日,歐盟食品安全局就一種果膠酯酶(pectinesterase)的安全性評(píng)價(jià)發(fā)布意見。
       食品伙伴網(wǎng)訊  2022年12月7日,歐盟食品安全局就一種果膠酯酶(pectinesterase)的安全性評(píng)價(jià)發(fā)布意見。
     
      據(jù)了解,這種食品酶是由轉(zhuǎn)基因琉球曲霉菌株FLZSC生產(chǎn)的,旨在用于生產(chǎn)果汁和其他水果或蔬菜產(chǎn)品的水果和蔬菜加工,以及用除葡萄以外的水果制造酒精飲料。
     
      經(jīng)過評(píng)估,專家小組認(rèn)為,在預(yù)期的使用條件下,盡管可能性不大,但不能排除飲食暴露引起過敏反應(yīng)的風(fēng)險(xiǎn),尤其是對(duì)橄欖花粉過敏的個(gè)體。該小組得出結(jié)論,這種食品酶在預(yù)期使用條件下不會(huì)引起安全問題。部分原文報(bào)道如下:
     
      The food enzyme pectinesterase (pectin pectylhydrolase, EC 3.1.1.11) is produced with the genetically modified Aspergillus luchuensis strain FLZSC by Advanced Enzyme Technologies Ltd. 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. It is intended to be used in fruit and vegetable processing for the production of juices and other fruit or vegetable products, as well as in the manufacture of alcoholic beverages from fruits other than grapes. Dietary exposure to the food enzyme–total organic solids (TOS) was estimated to be up to 0.274 mg TOS/kg body weight (bw) per day in European populations. Genotoxicity tests did not raise a safety concern. The systemic toxicity was assessed by a repeated dose 90-day oral toxicity study in rats. The Panel identified a no observed adverse effect level of 833 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 3,040. A search was made for the similarity of the amino acid sequence of the food enzyme to those of known allergens and three matches with respiratory allergens were found. The Panel considered that under the intended conditions of use, the risk of allergic reactions by dietary exposure, particularly in individuals sensitised to olive pollen, although unlikely, cannot be excluded. 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:2022-12-08
     
     
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