Distribution of Ceramide 2-Aminoethylphosphonate and Ceramide Aminoethylphosphate (Sphingoethanolamine)in Some Aquatic Animals

Abstract

1. In order to effectively examine the distribution of ceramide 2-aminoethyiphosphonate and ceramide 2-aminoethyiphosphate (sphingoethanolamine) in some aquatic animals, their alkali-stable lipid fractions were prepared, and they were analyzed by thin-layer chromatography and an amino acid analyzer. Such two methods of analysis are described. 2. Results obtained by these two methods indicated that all the members of bivalves, snails and cephalopods examined contain either one or two ceramide derivatives. However, neither of the ceramides could be found in the two species of fishes examined.