【摘要】 对 4个门的 14株 (红藻门 8株 ,甲藻门 1株 ,隐藻门 2株 ,绿藻门 3株 )海洋微藻进行了脂肪酸含量测定 ,微藻在确定的条件下生长 ,指数生长末期收获。结果表明 ,各门的微藻都有其独特的脂肪酸特征 :红藻中含有大量的 2 0 :4 n- 6和 2 0 :5n- 3,其中紫球藻 R2 5含量最高 ,占总脂肪酸的4 9.8% (AA占总脂肪酸的 2 0 .5% ,EPA占总脂肪酸的 2 9.3% )。隐藻的主要脂肪酸是 16 :0、18:1n- 9、18:3n- 3、18:4 n- 3、2 0 :5n- 3、2 2 :5n- 3。与其它甲藻有别的虫黄藻 ,18:4 n- 3含量很少并且不含EPA,其主要合成的是 16 :0、18:1n- 9和 2 2 :6 n- 3。 C16和 C18的不饱和脂肪酸是本实验研究的 3株绿藻的主要脂肪酸更多还原

【Abstract】 The Fatty acid (FA) composition of 14 strains of marine microalgae from four taxonomic divisions were examined. The microalgae were grown under defined conditions and harvested during a late log phase. The result indicated that each phylum of microalgae was characterized by a specific fatty acid profile. Significant concentrations of 20:4n-6 and 20:5n-3 were present in the red microalgae, Porphyridium sp. with the highest proportion in R 25 (49.8%). The major fatty acids in two species of Chroomonas were 16:0, 18:1 18:3n-3, 18:4n-3 and 20:5n-3. In Zooxanthella microadriatica, the fatty acid composition is different from that of other dinoflagellates. Z. microdriatica contains little 18:4n-3 and no EPA, its major fatty acids are 16:0, 18:1 and 22:6n-3. 16-and 18-carbon unsaturated fatty acids are important components in 3 green alga strains examined.更多还原