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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)基因大腸桿菌菌株LE1B109-pPB129生產(chǎn)的蔗糖磷酸化酶的安全性

歐盟評(píng)估轉(zhuǎn)基因大腸桿菌菌株LE1B109-pPB129生產(chǎn)的蔗糖磷酸化酶的安全性

放大字體  縮小字體 時(shí)間:2024-05-16 11:16 來源:食品伙伴網(wǎng) 作者: 澤夕   
核心提示:2024年5月15日,歐盟食品安全局就一種蔗糖磷酸化酶(sucrose phosphorylase)的安全性評(píng)價(jià)發(fā)布意見。
   食品伙伴網(wǎng)訊  2024年5月15日,歐盟食品安全局就一種蔗糖磷酸化酶(sucrose phosphorylase)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)基因大腸桿菌菌株LE1B109-pPB129生產(chǎn)的,旨在與纖維二糖磷酸化酶結(jié)合用于生產(chǎn)特種碳水化合物纖維二糖。
 
  經(jīng)過評(píng)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(xiǎn),但這種可能性被認(rèn)為很低。根據(jù)所提供的數(shù)據(jù),評(píng)估小組得出結(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 sucrose phosphorylase (sucrose: phosphate α-d-glucosyltransferase; EC 2.4.1.7) is produced with the genetically modified Escherichia coli strain LE1B109-pPB129 by c-LEcta GmbH. The genetic modifications do not give rise to safety concerns. The food enzyme was free from viable cells of the production organism. It is intended to be used in combination with a cellobiose phosphorylase in the production of the specialty carbohydrate cellobiose. Since residual amounts of food enzyme–total organic solids are removed by the downstream purification steps, the Panel considered that toxicological studies other than assessment of allergenicity were unnecessary and a dietary exposure was not estimated. A search for the similarity of the amino acid sequence of the food enzyme to known allergens was made and no match was found. The Panel considered that the risk of allergic reactions upon dietary exposure 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(qǐng)聯(lián)系news@foodmate.net。
日期:2024-05-16
 
 
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