Biochemical composition of Indian common small pelagic fishes indicates richness in nutrient capable of ameliorating malnutrition and age-associated disorders

Abstract

Seafood is an excellent source of metabolically essential proteins, vitamins, trace elements and polyunsaturated fatty acids. There is a rising awareness of the beneficial role of fish and other marine foods in human nutrition. The knowledge regarding the nutritional significance of fish in counteracting the malnutrition and age-associated chronic diseases are relatively scanty. In this present study, an attempt has been made to examine the proximate composition, amino acid profile and fatty acid composition of small pelagic fishes (sardine, mackerel and anchovy) available in Indian south-west coast waters. The biochemical parameters were determined using standard experimental protocols. The low value small pelagic fishes are found to be rich sources of ω-3 Fatty acids [eicosapentaenoic acid (EPA) & docosahexaenoic acid (DHA)], which are very much essential for the development of brain and heart tissues. Sardine and mackerel possess all the essential and non-essential amino acids in a balanced proportion capable of ameliorating the protein deficiency disorders. The non-protein amino acid taurine essential for various physiological functions was also found to be present in rich quantities in small pelagic fishes. Presence of sulphur containing amino acids cysteine and methionine and high histidine content adds functionality to the nutritional value of small pelagic fish protein. Anchovies and sardine are valuable sources of calcium, which can effectively be used to combat calcium deficiency in children. The result of the present study has indicated that small pelagic fishes [sardine, mackerel and anchovy] are potential sources of attenuating malnutrition-related diseases and age-associated disorders.