微生物法测定婴幼儿奶粉中泛酸的优化研究  

Optimization Study on Microbial Method for Determining Pantothenic Acid in Infant Milk Powder

作　　者：陈明瑶 赵胤丞 张联琴 郭颖 钱洲 张加稳 CHEN Mingyao;ZHAO Yincheng;ZHANG Lianqin;GUO Ying;QIAN Zhou;ZHANG Jiawen(Yunnan Products Quality Supervision&Inspection Institute,National Tropical Agricultural Products Quality Supervision and Inspection Center,Kunming 650223,China;Kunming Food and Drug Inspection Institute,Kunming 650034,China)

机构地区：[1]云南省产品质量监督检验研究院,国家热带农副产品监督检验中心,云南昆明650223 [2]昆明市食品药品检验所,云南昆明650034

出　　处：《食品安全导刊》2024年第19期97-102,共6页China Food Safety Magazine

基　　金：云南省市场监督管理局科技计划项目(2022YSJK12,2022YSJK18)。

摘　　要：通过优化《食品安全国家标准食品中泛酸的测定》(GB 5009.210—2023)中微生物法测定婴幼儿奶粉中泛酸含量的关键实验条件和步骤,提高数据的重复性和准确性。结果表明,优化后,重复性实验的相对标准偏差为1.36%~2.38%,加标回收率在99.2%~104.2%,解决了国标法因菌种生长差异导致菌悬液浓度不稳定等问题,有效提高了检测数据的稳定性。The reproducibility and accuracy of the data were improved by optimizing the key test conditions and steps for the determination of pantothenic acid content in infant milk powder by microbial method in GB 5009.210—2023.The results showed that after optimization,the relative standard deviation of the repeatability test was 1.36%~2.38%,and the recovery rate of the spike was 99.2%~104.2%,which solved the problem of unstable bacterial suspension concentration caused by the difference in bacterial growth in the national standard method,and effectively improved the stability and reliability of the detection data.

关 键 词：泛酸 微生物法 婴幼儿奶粉 实验条件优化 

分 类 号：TS252.51[轻工技术与工程—农产品加工及贮藏工程]