ISO 17997-1-2004 牛奶.酪蛋白-氮含量的测定.第1部分:间接法(参照法)

标准号：ISO 17997-1-2004
中文标准名称：牛奶.酪蛋白-氮含量的测定.第1部分:间接法(参照法)
英文标准名称：Milk - Determination of casein-nitrogen content - Part 1: Indirect method (Reference method)
标准类型：X16
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：X16
国际标准分类号：67.100.10
适用范围：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.