13种微藻的脂肪酸组成分析

分析了13种微藻(包括7种绿藻,5种杂色藻和1种红藻)的总脂含量和脂肪酸组成,结果表明,不同门类微藻的脂肪酸组成差异较大:绿藻的脂肪酸组成以C16和C18为主;杂色藻类的脂肪酸组成相近,金藻门含有14:0、16:0、18:1、18:4等特征脂肪酸,三角褐指藻主要的脂肪酸为14:0、16:0、16:1、16:3和20:5,而粉核油球藻的脂肪酸以14:0、16:0、20:5为主;紫球藻的脂肪酸组成以16:0、20:4和20:5为主。在测试的13种微藻中,杜氏盐藻的亚麻酸含量最高,占总脂肪酸的60.9%;等鞭金藻的十八碳四烯酸含量最高,占总脂肪酸的19.6%;紫球藻和粉核油球藻中花生四烯酸与二十碳五烯酸(EPA)含量分别占总脂肪酸的17.1%和20.9%。

An analysis on fatty acid composition of 13 microalgae

The total fat content and fatty acid composition of 13 microalgae were analyzed. Results showed that fatty acid composition among different categories varied greatly. Chlorophyta contained 16C and 18C commonly. The fatty acid composition of Chromophyta were similar, among which Chrysophyta contains characteristics fatty acids such as 14:0, 16:0, 18:1, 18:4 etc, while primary fatty acids of Phaeodactylum tricornutum are 14:0,16:0,16:1,16:3 and 20:5, the main fatty acids in Pinguiococcus pyrenoidosus were 14:0, 16:0, 20:5, and Porphyridium contains 16:0,20:4 and 20:5. Dunaliella salina had the highest proportions of Linolenic acid(about 60.9% of the total fatty acid). Isochrysis zhanjianggensis possessed the highest proportion of Parinaric acid (about 19.6% of the total fatty acid). The Arachidonic acid in Porphyridium and Eicosapentaenoic acid(EPA)in P. pyrenoidosus were about 17.1% and 20.9% of the total fatty acids respectively.