ISO 18252:2006 无水乳脂肪-气体液相色谱法（常规方法）测定固醇（甾醇）成分

标准编号：ISO 18252:2006

中文名称：无水乳脂肪-气体液相色谱法（常规方法）测定固醇（甾醇）成分

英文名称：Anhydrous milk fat — Determination of sterol composition by gas liquid chromatography (Routine method)

发布日期：2006-02

标准范围

This International Standard specifies a routine gas liquid chromatographic method for the determination of thesterol composition in anhydrous milk fat extracted from dairy products directly on the unsaponifiable matter,The first goal of this International Standard is the quantitative evaluation of cholesterol, which representsabout 98 % of the sterol fraction of pure milk fat. Moreover, in the case of analysis of milk fat in a mixture ofvegetable fats, the specified procedure allows the evaluation of the most important phytosterols. Theprocedure has been validated on milk fat samples containing approximately 28 % to 32 % of vegetable fat.Due to the absence of the purification step, which allows the complete removal of interfering compounds fromthe unsaponifiable matter, particular care should be taken when applying this method to the verification of thepurity of milk fat of unknown origin. In the case of suspicious results, the reference method described in ISO 12078?IDF 159 can be used.

标准预览图