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, Cavanna Daniele, Liu Yi
EFSA J. 2024 Dec 17;22(12):e9164. doi: 10.2903/j.efsa.2024.9164. eCollection 2024 Dec.
The food enzyme triacylglycerol lipase (triacylglycerol acylhydrolase, EC 3.1.1.3) is produced with the genetically modified strain NZYM-LH by Novozymes A/S. A safety evaluation of this food enzyme was made previously, in which EFSA concluded that, under the intended conditions of use, this food enzyme did not give rise to safety concerns. Due to the implementation of a new methodology to estimate the dietary exposure to food enzymes in 2016, the European Commission requested EFSA to revise the exposure assessment of this food enzyme by using this new methodology. In this assessment, EFSA realigned the intended uses of this food enzyme to two food manufacturing processes and recalculated the dietary exposure. Dietary exposure to the food enzyme-TOS was calculated to be up to 0.284 mg TOS/kg body weight (bw) per day in European populations. When combined with the no observed adverse effect level previously reported (1080 mg TOS/kg bw per day, the highest dose tested), the Panel derived a margin of exposure of at least 3803. Based on the revised exposure estimate, the margin of exposure calculated thereof and the previous evaluation, the Panel concluded that this food enzyme does not give rise to safety concerns under the intended conditions of use.
食品酶三酰甘油脂肪酶(三酰甘油酰基水解酶,EC 3.1.1.3)由诺维信公司(Novozymes A/S)采用转基因菌株NZYM-LH生产。此前已对这种食品酶进行了安全性评估,欧洲食品安全局(EFSA)得出结论,在预期使用条件下,这种食品酶不存在安全问题。由于2016年实施了一种新的方法来估算食品酶的膳食暴露量,欧盟委员会要求欧洲食品安全局使用这种新方法对这种食品酶的暴露评估进行修订。在本次评估中,欧洲食品安全局将这种食品酶的预期用途调整为两种食品制造工艺,并重新计算了膳食暴露量。据计算,欧洲人群中该食品酶-TOS的膳食暴露量高达每天0.284毫克TOS/千克体重(bw)。当与先前报告的未观察到不良反应水平(每天1080毫克TOS/千克体重,测试的最高剂量)相结合时,专家小组得出的暴露边际至少为3803。基于修订后的暴露估计值、由此计算出的暴露边际以及先前的评估,专家小组得出结论,在预期使用条件下,这种食品酶不存在安全问题。