ISO 11815:2007 乳 牛凝乳酶的总凝乳活性测定

标准编号：ISO 11815:2007

中文名称：乳 牛凝乳酶的总凝乳活性测定

英文名称：Milk — Determination of total milk-clotting activity of bovine rennets

发布日期：2007-07

标准范围

ISO 11815 | IDF 157:2007描述了一种测定牛凝乳酶总凝乳活性的方法，该凝乳酶仅含有凝乳酶和牛胃蛋白酶，在pH值为6,5的标准牛奶基质上作为活性凝固酶。为了使用该方法得出准确的结果，请使用适当的方法检查未知来源的测试样品是否存在非牛来源的主要凝乳酶。ISO 11815 | IDF 157:2007也可用于测定发酵产生的凝乳酶的总凝乳活性。

ISO 11815|IDF 157:2007 describes a method for the determination of the total milk-clotting activity of bovine rennet containing only chymosin and bovine pepsin as the active coagulating enzymes on a standard milk substrate at pH 6,5.To produce accurate results with this method, check test samples of unknown origin for the absence of main milk-clotting enzymes of non-bovine origin by using an appropriate method.ISO 11815|IDF 157:2007 can also be applied to determine the total milk-clotting activity of fermentation-produced chymosin.

标准预览图