摘要
采用正己烷提取,KOH-CH3OH甲酯化,10%DEGS填充柱气相色谱法检测,同时测定C12:0 ~C22:1十种脂肪酸甲酯,并根据不同油种其脂肪酸的特征组分和含量以及其特征组分的绝对量的 不同来鉴别食用植物油的掺伪,方法安全、快速、准确,从而为植物油中掺伪检验提供了科学依据。
The sample is extracted with n-hexane, and methylated with KOH-CH3OH, and determined by Gas-chromatograph of glass colum packed with 10% DEGS. According to the feafure constituent、rel- ative concentration、absolute concentration, ten kinds of fatty acid methylester of C12:0~22:1 is determined at the same time to appraise edible vegetable oil trueness or adulteration. The method is safe, fast, and ac- curate.