饮用天然矿泉水中疑似粪链球菌的鉴定与分析

目的 检测某品牌饮用天然矿泉水样品中是否含有粪链球菌,并对出现的疑似菌落进行分析。方法 按照GB 8538-2016《食品安全国家标准 饮用天然矿泉水检验方法》中规定的检测方法对样品进行检测,对疑似菌落进行确证性试验,并通过VITEK 2 COMPACT全自动微生物鉴定系统对疑似菌进行鉴定。结果 滤膜上出现典型红色菌落,经确证性试验确认为非粪链球菌；经VITEK 2 COMPACT鉴定,该菌为粘质沙雷氏菌。结论 样品中的疑似菌落非粪链球菌而是粘质沙雷菌,该菌作为干扰菌对滤膜法检测粪链球菌具有参考意义。

Identification and analysis of suspected Enterococcus faecalis in drinking natural mineral water

Objective To detect the presence of Enterococcus faecalis in a natural mineral water sample and analyze the suspected bacterial colonies. Methods The samples were tested in accordance with the test method specified in GB 8538-2016 National food safety standard-Inspection of natural mineral water for drinking, and the suspected bacterial colonies were confirmed by VITEK 2 COMPACT automatic microbial identification system. Results The typical red colony appeared on the membrane, which was confirmed as non-streptococcus faecalis by confirmative test. VITEK 2 COMPACT identified the bacteria as Serratia marcescens. Conclusion The suspected colony of Enterococcus faecalis in the samples is not Enterococcus faecalis but Serratia marcescens.