ISO 6611:2004 牛奶和牛奶制品.酵母目和/或霉菌形成单位的计数.25℃时的计群技术

标准编号：ISO 6611:2004

中文名称：牛奶和牛奶制品.酵母目和/或霉菌形成单位的计数.25℃时的计群技术

英文名称：Milk and milk products — Enumeration of colony-forming units of yeasts and/or moulds — Colony-count technique at 25 degrees C

发布日期：2004-10

标准范围

This International Standard specifies a method for the detection and enumeration of colony-forming units (CFU) of viable yeasts and/or moulds in milk and milk products by means of the colony-count technique at 25 ℃.The method is applicable to— milk, liquid milk products,— dried milk, dried sweet whey, dried buttermilk, lactose,— cheese,— acid casein, lactic casein, rennet casein,— caseinate, acid whey powder,— butter,— frozen milk products (including edible ices),— custard, desserts, fermented milk and cream.NOTEThis method is not suitable for a large number of thermolabile yeasts (in fresh cheese). In such cases the agar-surface-plating method is preferred.

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