不同地区酥油脂溶性维生素和脂肪酸组成分析

Analysis of Lipid-Fat-Soluble Vitamin and Fatty Acid Composition of Ghee from Different Regions

对林芝和那曲酥油脂溶性维生素和脂肪酸组成进行研究。结果表明:酥油中维生素E含量均为最高,分别为2020μg/100 g和1900μg/100 g,其次是维生素A含量,分别为345μg/100 g和311μg/100 g,维生素E和维生素A含量均差异显著(p<0.05)。维生素D3含量相对较少,维生素K2未检出。两种酥油分别检测到25种和20种脂肪酸,饱和脂肪酸含量及脂肪酸总量差异不显著(p>0.05),不饱和脂肪酸含量及功能性脂肪酸含量差异显著(p<0.05),饱和脂肪酸含量均占到总量的1/2以上,棕榈酸、硬脂酸含量最多。单不饱和脂肪酸含量分别为24.22%和32.66%,差异显著(p<0.05)。功能性脂肪酸主要有油酸(19.2%和29.7%)、亚油酸(0.52%和4.20%)、亚麻酸(0.65%和0.26%)、花生四烯酸(0.27%和0.15%),林芝酥油还含有少量的EPA(0.06%)和DPA(0.17%)。

The lipid-fat-soluble vitamin and fatty acid composition of ghee in Nyingchi and Nagqu were study.The results showed that the VE contents of ghee were highest,which were 2020μg/100 g and 1900μg/100 g,respectively.The second was VA contents,which were 345μg/100 g and 311μg/100 g,respectively.There were significant differences in VE and VA contents(p<0.05).VD3 contents were low relatively,and VK2 was not detected.25 and 20 kinds of fatty acids were detected in the two kinds of ghee,respectively,there was no significant difference in the saturated fatty acid content and total fatty acid(p>0.05),there was significant difference in the unsaturated fatty acids content and functional fatty acids content(p<0.05),the content of saturated fatty acids accounts for more than half of the total,and the palmitic acid and stearic acid content were most.The monounsaturated fatty acid contents were 24.22%and 32.66%,respectively,with significant difference(p<0.05).The main functional fatty acids were oleic acid(19.2%and 29.7%),linoleic acid(0.52%and 4.20%),linolenic acid(0.65%and 0.26%),and arachidonic acid(0.27%and 0.15%),and a small amount of EPA(0.06%)and DPA(0.17%)were in Nyingchi ghee.