常见植物油鉴别及掺伪的气相色谱新检测法

用气相色谱法分析测定了常见植物油脂酸组成与含量,对其有关实验条件进行了优选,获得常见植物油脂脂肪酸组成与含量正常值。测定模拟掺伪常见植物油脂脂肪酸组成与含量,获得掺伪常见植物油脂脂肪酸组成与含量的变化规律。建立了常见植物油油品的鉴别及其掺伪的气相色谱检测法,可快速鉴别常见植物油的种类,对常见植物油是否掺掺伪可作出快速判别,同时对掺伪植物油可作定性、定量分析。用本法对市场销售食用植物油进行抽检,共抽检了262件油样,检出掺伪芝麻油83件、掺伪菜油47件,掺伪花生油菜23件,掺伪橄榄油11件,掺伪量10%～95%不等。表明这种方法行之有效的。

A New Adulteration Detection Method on Edible Vegetable Oils by Gas Chromatography

The components and contents of fatty acid in common edible vegetable oile were analyzed and determined with newreagents by gas chromatography.The experiment conditions involved were optimized and their normal contents were obtained.By testing the adulterated and imitated common edible vegetable oils,the variational regularity of the fatty acid components andcontents were obtained. The new method for discerming the adulterant from the gemuine by gas chromatography was established,which could idemtify the common kinds of edible vegetable oils,determine the oils adulteration rapidly and analyze the oils bothqualitatively and quantiatively.262 pieces of oil samples sold in the market were spot-tested with thes method,in which 83pieces of adulterated sesame oil,47 pieces of adulterated rape oil,23 pieces of adulterated peanut oil, and 11 pieces of olive oilwere checked out respectively, accounting for 10%～95% totally.It indicated that the method has been feasible and effective.