ISO 5541-1:1986
乳和乳制品 大肠杆菌的菌落计数 第1部分:30℃时的菌落计数技术

Milk and milk products; Enumeration of coliforms; Part 1 : Colony count technique at 30 degrees C

作废

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标准号

ISO 5541-1:1986

发布

1986年

发布单位

国际标准化组织

当前最新

ISO 5541-1:1986

 

 

适用范围

Specifies a method for enumerating bacteria which, at 30 degrees centigrade, form characteristic colonies and which can ferment lactose with the production of gas under the operational conditions described. The method described is applicable to milk and liquid milk products, dried milk, dried sweet whey, dried buttermilk, lactose, acid casein, lactic casein, rennet casein, caseinate, dried acid whey, cheese and processed cheese, butter, frozen milk products, custard, desserts, and cream. Is to be preferred for samples in which large numbers of coliforms are suspected (more than 100 per gram or 10 per millimetre).

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