2022年5月5日，据欧盟食品安全局（EFSA）消息，应欧盟委员会要求，欧盟动物饲料添加剂和产品（FEEDAP）研究小组就一种6-植酸酶（6-phytase）作为育肥家禽、饲养用于产蛋的鸡、产蛋鸡、饲养用于繁殖的火鸡、断奶仔猪、育肥猪和母猪饲料添加剂的安全性和有效性进行更新授权，并对其作为育肥母鸡和火鸡、观赏鸟、哺乳仔猪和小型猪种饲料添加剂的新用途发表科学意见。
据了解，这种6-植酸酶由转基因Komagataella phaffii DSM 23036产生。经过评估，专家小组认为在授权的使用条件下，该添加剂对目标物种、消费者和环境仍然是安全的。部分原文报道如下：
OptiPhos® is the trade name of the feed additive under assessment containing 6-phytase produced by a genetically modified strain of Komagataella phaffii. It is authorised for use in chickens for fattening and reared for laying, turkeys for fattening and reared for breeding, other avian species for fattening, laying hens, weaned piglets, pigs for fattening and sows. This scientific opinion concerns the request for the renewal of the authorisation of the additive for the species/categories for which there is an authorisation and the extension of use to breeding hens, turkeys for breeding purposes, ornamental birds, minor pig species for fattening or breeding and suckling piglets for the period when solid feed is given. The applicant provided evidence that the additive currently in the market complies with the conditions of the authorisation. There is no new evidence that would lead the EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) to reconsider previous conclusions that the additive remains safe for the animal species/categories, the consumer and the environment under the authorised conditions of use. This conclusion applies also to the new target species/categories for which a request of extension of use is made. The additive is not irritant to skin or eyes but should be considered a respiratory sensitiser. There was no need for assessing the efficacy of the additive for the authorised species/categories. The additive has the potential to be efficacious at 125 OTU/kg complete feed in all poultry species other than turkeys, ornamental birds, pigs for fattening, sows and minor pig species for fattening or breeding; and in turkeys for fattening, reared for breeding and for breeding purposes, weaned piglets and suckling piglets (for the period when solid feed is given) at 250 OTU/kg feed.
