脂肪酸类物质的抑藻效应及其构效关系

研究了17种脂肪酸对产毒铜绿微囊藻、蛋白核小球藻以及斜生栅藻的抑制效应,比较了脂肪酸抑藻的构效关系.结果表明,17种脂肪酸单独作用对研究的3种藻均有一定的抑制作用,但对产毒铜绿微囊藻的抑制作用最强.脂肪酸类物质抑藻效应与其化学结构密切相关,脂肪酸不饱和程度越高抑制作用越佳,碳链越短抑藻效果越好,奇数碳脂肪酸的抑藻效果好于偶数碳脂肪酸.多种脂肪酸联合抑藻具有协同抑制作用.

Inhibition on algae of fatty acids and the structure-effect relationship

Inhibition of 17 different fatty acids on toxic Microcystis aeruginosa, Chlorella pyrenoidosa Chick and Scenedesmus obliquus Kütz were studied, and the structure-effect relationship was compared. All the 17 different fatty acids could inhibit the three algae but the strongest inhibition occurred on toxic Microcystis aeruginosa. The inhibitory effect of fatty acids correlated with their chemical structures, the more unsaturated linkages in fatty acid, the stronger the algal growth inhibited; the shorter the carbon chain of fatty acid, the better the algal growth inhibited. And the inhibition of fatty acids with odd carbon atoms on the algal growth was better than that of fatty acids with even carbon. The collective activity of multi-fatty acids showed synergistic growth inhibition on the three species of algae.