气相色谱—质谱法鉴定油茶籽油掺杂的方法研究

摘要

The fatty acid composition of the common edible vegetable oil was analyzed,and the significant changed characteristic components in adulterated camellia oil was also determined. By setting different proportions of adulterating contents and using the method of gas chromatography-mass spectrometry ( GC-MS) ,the regression equation was established between the characteristic components contents after adulterated of palm oil, rapeseed oil, cotton seed oil, peanut oil and soybean oil in camellia oil and the adulterated amount. The correlation coefficient was greater than 0. 99, and the overall accuracy was 101%. This method can be used for the qualitative identification and quantitative detection of adulterated camellia oil.%分析了常见食用植物油脂肪酸组成,确定油茶籽油掺杂后变化显著的特征成分,通过设置不同比例的掺杂量,采用气相色谱—质谱法,研究建立了油茶籽油中掺杂棕榈油、菜籽油、棉籽油、花生油和大豆油等5种植物油后的特征组分含量与掺杂量的回归方程,相关系数0.99以上,总体准确率101％.本方法可以用于油茶籽油掺杂的定性鉴定和定量检测.