动植物油脂 - 酸值和酸度的测定

[中文适用范围]： 本文件规定了三种测定动物和植物脂肪和油（以下称为“脂肪”）中酸度的方法（两种滴定法和一种电位法）。酸度最好以酸值表示，或者以常规计算的酸度表示。本文件适用于精制和粗制植物或动物脂肪和油、皂脚脂肪酸或工业脂肪酸。它不适用于蜡。由于这些方法完全是非特异性的，因此它们不适用于区分矿物酸、游离脂肪酸和其他有机酸。因此，酸值包括任何存在的矿物酸。牛奶和奶制品（或来自牛奶和奶制品的脂肪）不在本文件的范围之内。 [外文原描述]： This document specifies three methods (two titrimetric and one potentiometric) for the determination of acidity in animal and vegetable fats and oils, hereinafter referred to as "fats". The acidity is expressed preferably as acid value or, alternatively, as acidity calculated conventionally. This document is applicable to refined and crude vegetable or animal fats and oils, soap stock fatty acids or technical fatty acids. It does not apply to waxes. Since the methods are completely non-specific, they do not apply to differentiating between mineral acids, free fatty acids and other organic acids. The acid value, therefore, includes any mineral acids that are present. Milk and milk products (or fat coming from milk and milk products) are excluded from the Scope of this document.