On certain simple peptides occurring in marine algae

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Abstract
The occurrence of peptides in the following marine algae is reported:[long dash]Pelvetia canaliculata forma libera (Phaeophyceae) and the encrusted red algae Corallina officinalis, C. squamata, Amphiora capensis and Cheilo-sporium corymbosurn, both the latter from S. Africa, Galaxaura subverticillata from Florida and Lithophyllum incrustans. The peptides are water soluble and readily diffusible, contain a small proportion of pentose sugar, and the yields of crude peptide vary in amount in the different algae from 0.05 to 0.728% calculated on dry weight of alga. The following amino acids were identified among the products of hydrolysis of the peptides:[long dash]alanine, argi-nine, aspartic acid, glutamic acid and phenylalanine. The peptides of the 2 spp. of Coralline examined differed in composition.

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