标准编号：ISO/TS 4985:2023
中文名称：乳和乳制品 碱性磷酸酶活性的测定 荧光微孔板法
英文名称：Milk and milk products — Determination of alkaline phosphatase activity — Fluorimetric microplate method
发布日期：2023-07
标准范围
This document specifies a fluorimetric microplate method for the determination of alkaline phosphatase (ALP, EC 3.1.3.1) [5] activity in raw and heat-treated whole milk, semi-skimmed milk, skimmed milk, cream, flavoured milks and cheeses. This method is applicable to milk and milk-based drinks from cows, sheep and goats. Although the method was not tested in milk from other species, it can also be applicable to milk from other species with a similar composition to cow, sheep or goat milk, such as milk from buffalo and camelids. It is also applicable to milk powder after reconstitution and soft, semi-hard and hard cheeses provided that the mould is only on the surface of the cheese and not also in the inner part (e.g. blue veined cheeses). For large hard cheeses, specific conditions of sampling apply (see Clause 7). NOTE This method was adapted from Reference [6].
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