Deep-sea mud shrimp and shovel-nosed lobster from the Arabian Sea as prospective sources of long-chain polyunsaturated fatty acids
Kajal Chakraborty, Soumya Krishnan, Rekha Devi Chakraborty, P. Vijayagopal
Abstract
Fatty acid profile of deep-sea mud shrimp (Solenocera hextii) and shovel-nosed lobster (Thenus unimaculatus) harvested \nfrom south-west coast (Arabian Sea) of India were evaluated and compared. Palmitic and oleic acids were the principle \nsaturated fatty acids and monounsaturated fatty acids, respectively in lobster and shrimp species. T. unimaculatus contained \ngreater concentrations of C20-22 n-3 polyunsaturated fatty acids, such as docosahexaenoic acid and eicosapentaenoic acid. \nHigher n-3/n-6 polyunsaturated fatty acid ratio (greater than 4) in addition to considerably greater polyunsaturated/saturated \nfatty acid (>1.2) and hypocholesterolaemic/hypercholesterolaemic ratio (>2) were recorded in shovel-nosed lobster \ncompared to the mud shrimp. Lesser thrombogenicity (≤0.5) and atherogenicity (<1.0) indices recognised T. unimaculatus \nas a desirable marine species for human nutrition.