Abstract:
The fatty acid composition as well as volatiles of total lipids in the marine sponge Siphonodictyon coralliphagum was analyzed. Most abundant are saturated fatty acid among which the % of docosanoic acid is found to be 15.49. Branched saturated fatty acids are also present in a good amount (23.45 %) and octadecanoic acid, 17 methyl-constitutes 11.62 % of it's total content. Monounsaturated fatty acids constitute only 5.53 % of the total fatty acid. Among poly unsaturated fatty acids, 5,9-hexacosadienoic acid is dominant (8.27 %). The lipid extract showed activity against Escherichia coli (A fish pathogen).