标准编号：ISO 17997-1:2004
中文名称：牛奶 干酪素-氮含量的测定-第1部分： 间接法 （参考方法）
英文名称：Milk — Determination of casein-nitrogen content — Part 1: Indirect method (Reference method)
发布日期：2004-09
标准范围
This part of ISO 17997 | IDF 29 specifies a reference method for the indirect determination of the casein-nitrogen content of bovine milk.The method can be modified for milk from other species or liquid dairy products.NOTE Casein nitrogen will decrease with milk storage time due to casein breakdown even at 4 ℃. The casein nitrogen of heat-treated milk will be artificially high because of whey-protein denaturation.
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