VITAMIN ANALYSIS OF 5 PLANKTONIC MICROALGAE AND ONE MACROALGA

Vitamin analysis was carried out on five microalgae used in aquaculture: Tetraselmis suecica, Isochrysis galbana, Pavlova lutheri, Skeletonema costatum and Chaetoceros calcitrans and one macroalga, Sargassum muticum, which is invasive on the Atlantic shores of France. Both liposoluble (provitamin A, E, K) and hydrosoluble (B1, B2, B6, B12, C, PP) vitamins were quantified. For most of them, greater amounts were obtained in the algal products than in the usual sources. On a dry weight basis, Tetraselmis suecica contained 4280-mu-g g-1 provitamin A and 6323-mu-g g-1 vitamin E, Pavlova lutheri 1162-mu-g g-1 vitamin B12 and 837-mu-g g-1 vitamin C, Isochrysis galbana 2690-mu-g g-1 vitamin PP and 183-mu-g g-1 vitamin B6, and Skeletonema costatum 710-mu-g g-1 vitamin B1.