Abstract
Biological (antimicrobial, cytotoxic, embryotoxic, and hemolytic) activity of total lipids, individual fractions and classes of lipids, and photosynthetic pigments of Saccharina cichorioides (Miyabe) were studied, together with the effect of season of the alga harvesting and changes in fatty acid composition of lipids on their activity. Antimicrobial activity was more pronounced in total lipids, individual fractions of lipids, and photosynthetic pigments of S. cichorioides collected in March. High antimicrobial activity was also demonstrated by total lipids of alga samples collected in September and November and hemolytic activity, in those collected in March and November. Pronounced hemolytic activity was demonstrated by some classes of glyceroglycolipids of laminaria samples collected in November. Cytotoxic activity toward mouse splenocytes was demonstrated only by total lipids of alga collected in March. Toxic effects toward embryos of sea urchin were demonstrated by lipids of S. cichorioides collected in June and September. None of the lipids or pigments was active against Ehrlich ascites carcinoma.
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