ISO 16649-1-2001 食品和动物饲料的微生物学 β葡糖苷酸酶阳性大肠杆菌记数的水平方法 第1部分：44℃下用隔膜和5溴-4氯3吲哚-β-D葡糖苷酸的菌落记数技术

标准号：ISO 16649-1-2001
中文标准名称：食品和动物饲料的微生物学 β葡糖苷酸酶阳性大肠杆菌记数的水平方法 第1部分：44℃下用隔膜和5溴-4氯3吲哚-β-D葡糖苷酸的菌落记数技术
英文标准名称：Microbiology of food and animal feeding stuffs - Horizontal method for the enumeration of
标准类型：C62
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：C62
国际标准分类号：07.100.30
适用范围：This part of ISO 16649 specifies a horizontal method for the enumeration of β-glucuronidase-positive Escherichia coli in products intended for human consumption or for the feeding of animals. It uses a colony-count technique after resuscitation using membranes and incubation at 44 ℃ on a solid medium containing a chromogenic ingredient for detection of the enzyme β-glucuronidase. WARNING — Strains of Escherichia coli which do not grow at 44 ℃ and, in particular, those that are p-glucuronidase negative, such as Escherichia coli O157, will not be detected.