摘要
为了解驴乳粉原料的致病菌污染情况,对23批存放时间3年以上的驴乳粉原料进行了微生物检测。首先对原料进行了菌落总数计数,对于有菌落检出的原料,对其中可能含有的金黄色葡萄球菌、沙门氏菌、克罗诺杆菌(阪崎肠杆菌)和单核细胞增生李斯特氏菌进行了鉴定和分型。结果其中1批原料中经鉴定分型含有金黄色葡萄球菌和鼠伤寒沙门氏菌,另1批原料经中经鉴定分型含有克罗诺杆菌(阪崎肠杆菌)和单核细胞增生李斯特氏菌。表明驴乳粉原料有致病菌污染的风险,且不同批次原料染菌的种类存在差别,为后续的工艺优化、防腐策略选择等提供了依据。
To investigate the contamination of pathogenic bacteria in donkey milk powder raw materials,microbial testing was conducted on 23 batches of donkey milk powder raw materials stored for more than 3 years.First,the aerobic plate count was determined for the raw materials.For samples where colonies were detected,identification and typing were performed to check for the presence of Staphylococcus aureus,Salmonella,Cronobacter(Enterobacter sakazakii),and Listeria monocytogenes.The results showed that one batch was identified and typed to contain Staphylococcus aureus and Salmonella Typhimurium,while another batch was identified and typed to contain Cronobacter(Enterobacter sakazakii)and Listeria monocytogenes.This indicates a risk of pathogenic bacterial contamination in donkey milk powder raw materials,with variations in the types of bacteria across different batches,providing a basis for subsequent process optimization and preservative strategy selection.
作者
钱萍
陈淑娴
王琴
QIAN Ping;CHEN Shu-xian;WANG Qin(Wuxi Institute of Inspection,Testing and Certification,Wuxi 214023,China)
基金
2024年度江苏省市场监管局科技计划项目(KJ2024018)。
作者简介
钱萍(1981-),女,本科,工程师,E-mail:qianping@163.com。;联系人:王琴(1973-),女,高级工程师。
