BS ISO 16649-2-2001 食品和动物饲料的微生物学.β-葡萄糖醛酸酶阳性大肠杆菌计数的水平方法.44 ℃下用隔膜和5-溴-4-氯-3-吲哚-β-D葡糖苷酸的菌落计数技术

标准号：BS ISO 16649-2-2001
中文标准名称：食品和动物饲料的微生物学.β-葡萄糖醛酸酶阳性大肠杆菌计数的水平方法.44 ℃下用隔膜和5-溴-4-氯-3-吲哚-β-D葡糖苷酸的菌落计数技术
英文标准名称：Microbiology of food and animal feeding stuffs - Horizontal method for the enumeration of
标准类型：C53
发布日期：2001/10/23 12:00:00
实施日期：2001/10/23 12:00:00
中国标准分类号：C53
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 at 44 ℃ on a solid medium containing a chromogenic ingredient for detection of the enzyme p-glucuronidase. WARNING —Strains of Escherichia coli which do not grow at 44 ℃ and, in particular, those that are β-glucuronidase negative, such as Escherichia coli 0157, will not be detected.