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来自转基因菌株DSM 34099的食品酶β-半乳糖苷酶的安全性评估。

Safety evaluation of the food enzyme -galactosidase from the genetically modified strain DSM 34099.

作者信息

Zorn Holger, Barat Baviera José Manuel, Bolognesi Claudia, Catania Francesco, Gadermaier Gabriele, Greiner Ralf, Mayo Baltasar, Mortensen Alicja, Roos Yrjö Henrik, Solano Marize L M, Sramkova Monika, Van Loveren Henk, Vernis Laurence, Roos Yrjö, Andryszkiewicz Magdalena, Cavanna Daniele, Kovalkovicova Natalia, Peluso Silvia, Ferreira de Sousa Rita

出版信息

EFSA J. 2024 Aug 7;22(8):e8949. doi: 10.2903/j.efsa.2024.8949. eCollection 2024 Aug.

Abstract

The food enzyme -galactosidase (-d-galactoside galactohydrolase; EC 3.2.1.23) is produced with the genetically modified strain DSM 34099 by Kerry Group Services International, Ltd. (KGSI). The genetic modifications do not give rise to safety concerns. The food enzyme is free from viable cells of the production organism and its DNA. The production strain met the requirements for the qualified presumption of safety (QPS) approach. The food enzyme is intended to be used in two food manufacturing processes. Dietary exposure was estimated to be up to 7.263 mg total organic solids/kg body weight per day in European populations. Given the QPS status of the production strain and the absence of concerns resulting from the food enzyme manufacturing process, toxicity tests, other than an assessment of allergenicity, were considered unnecessary by the Panel. A search for the identity of the amino acid sequence of the food enzyme to known allergens was made and one match with a food allergen from kiwi fruit was found. The Panel considered that a risk of allergic reactions upon dietary exposure to this food enzyme, particularly in individuals sensitised to kiwi fruit, cannot be excluded. 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.

摘要

食品酶β-半乳糖苷酶(β-D-半乳糖苷半乳糖水解酶;EC 3.2.1.23)由嘉利宝国际服务有限公司(KGSI)使用转基因菌株DSM 34099生产。这些基因改造不会引发安全问题。该食品酶不含生产生物的活细胞及其DNA。生产菌株符合安全合格假定(QPS)方法的要求。该食品酶拟用于两种食品制造工艺。据估计,欧洲人群的膳食暴露量高达每天7.263毫克总有机固体/千克体重。鉴于生产菌株的QPS状态以及食品酶制造过程未引发担忧,专家小组认为除了评估致敏性外,无需进行毒性测试。对该食品酶氨基酸序列与已知过敏原进行了比对,发现与一种猕猴桃食品过敏原存在一处匹配。专家小组认为,不能排除膳食接触该食品酶会引发过敏反应的风险,尤其是对猕猴桃过敏的个体。根据所提供的数据,专家小组得出结论,在预期使用条件下,这种食品酶不会引发安全问题。

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