食品伙伴網(wǎng)訊  2019年2月28日，據(jù)歐盟食品安全局（EFSA）消息，應(yīng)歐盟委員會要求，歐盟動物飼料添加劑和產(chǎn)品（FEEDAP）研究小組被要求就大腸桿菌CGMCC 7.248（Escherichia coli CGMCC 7.248）發(fā)酵產(chǎn)生的L- 色胺酸（l‐tryptophan）作為飼料和飲用水營養(yǎng)添加劑用于所有動物物種的安全性和有效性發(fā)布科學意見。

 

　　經(jīng)過評估，F(xiàn)EEDAP研究小組認為，大腸桿菌CGMCC 7.248產(chǎn)生的L- 色胺酸作為添加劑對非反芻動物目標物種和消費者是安全的。

 

　　部分原文報道如下：

 

　　Following a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed （FEEDAP） was asked to deliver a scientific opinion on l‐tryptophan produced by fermentation with a genetically modified strain of Escherichia coli CGMCC 7.248 when used as a nutritional additive in feed and water for drinking for all animal species and categories. The production strain E. coli CGMCC 7.248 and its recombinant DNA were not detected in the final product. The product l‐tryptophan, manufactured by fermentation with E. coli CGMCC 7.248, does not give rise to any safety concern with regard to the genetic modification of the production strain. l‐Tryptophan produced by E. coli CGMCC 7.248 is safe for non‐ruminant target species. The use of unprotected l‐tryptophan in ruminant feed should be avoided. l‐Tryptophan produced by fermentation by E. coli CGMCC 7.248 is safe for the consumer. The level of endotoxins present in the product and its dusting potential indicate an inhalation risk for the user. l‐Tryptophan produced by E. coli CGMCC 7.248 is not a skin or eye irritant but it is a dermal sensitiser. The use of l‐tryptophan produced by E. coli CGMCC 7.248 in animal nutrition does not pose a risk to the environment. The product under assessment is regarded as an effective source of the amino acid l‐tryptophan for all non‐ruminant species. For the supplemental l‐tryptophan to be as efficacious in ruminants as in non‐ruminant species, it requires protection against degradation in the rumen.

 

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