摘要:
应用气相色谱技术,分析研究55种鱼油的34个脂肪酸组分特征指标,通过与其它动植物油的比较表明, 鱼油含有高度不饱和脂肪酸特征组分,其中EPA和DHA这两种必需脂肪酸(EFA)含量相对较高,分别为5.2%~20.0%和5.7%~25.9%,是鱼油最重要的特征脂肪酸和评判品质优劣的内在质量指标;鱼油中C18:2n6和C18:3n3这两种EFA含量相对较低,分别为0.6%~2.7%和0.2%~2.5%,在使用中应注意饲料中EFA的平衡对饲喂效果的影响;不同品种的鱼油有不同的脂肪酸特征指标,其总体水平与其它动植物油脂肪酸特征指标存在明显的差异,可作为鱼油品种和鱼油真伪的鉴别依据。
Abstract:
The characteristic indexes for constituents of thirty-four fatty acids in fifty-five kinds of fish oil were analyzed by gas chromatography.The results comparing the constituents of other animal oil and plant oil showed that fish oil had highy contents of unsaturated fatty acids,among which the amounts of essential fatty acids such as EPA and DHA were relatively higher, the characteristic indexes were 5.2%-20.0% and 5.7%-25.9% respectively.They were the most important fatty acids constituents in fish oil and were the index to evaluate the quality of fish oil.The amounts of C18:2n6 and C18:3n3 were lower (0.6%-2.7% and 0.2%-2.5%,respectively).The balance of essential fatty acids in feedstuff was important.Different kinds of fish oils had different characteristic indexes of fatty acids, the indexes were distinctly different from other animals and plants oil, it was the basis to distinguish the kinds of fish oil, to discern the false fish oil from the genuine.
点击查看大图
下载:
