Studies on Glycolipids in Marine Algae-I

Lipids of Porphyra tenera were fractionated by column chromatography using Florisil, DEAE cellulose and Kieselgel into the galactolipid fractions I, II, III and sulfolipid fraction. The fractions I, II and III were respectively recognized as monogalactolipid, digalactolipid and digalactolipid of a lyso-type. The glycolipids were composed of approximately 85 per cent of digalactolipid, approximately 10 per cent of sulfolipid, and only a small part of monogalactolipid. In fatty acids of these glycolipids, palmitic and eicosapentaenoic acids were dominant, and the latter was found to be localized in glycolipids.