标准摘要
[中文适用范围]： 本国际标准描述了在 pH 6.5 的标准奶底物上测定仅含有凝乳酶和牛胃蛋白酶作为活性凝固酶的牛凝乳酶总凝乳活性的方法。 为了使用该方法产生准确的结果，应使用适当的方法（例如IDF 110B）检查来源不明的测试样品中是否存在非牛来源的主要凝乳酶。 本国际标准也可用于测定发酵产生的凝乳酶的总凝乳活性。 [外文原描述]： 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.
英文名称Milk — Determination of total milk-clotting activity of bovine rennets