p. 267 - 276 QUELQUES DONNEES SUR LA COMPOSITION BIOCHIMIQUE ET LA VALEUR ENERGETIQUE DU PLANCTON TOTAL DES EAUX DU LITTORAL ROUMAIN DE LA MER NOIRE Natalia Rosoiu et Elena Ghitescu Institut Roumain de Recherches Marines Constanta Abstract In the paper, the content of mineral and total organic substance, nitrogen, protein, lipid, carbohydrat and aminoacids, as well as caloric values in marine plankton, are presented. On the basis of paper chromatography tehnique, 18 aminoacids have been recorded.