Proximate composition, fatty acid and amino acid profile of striped catfish, Pangasianodon hypophthalmus (Sauvage, 1878) cultured in Bangladesh

Abstract

Pangasianodon hypophthalmus is a major aquaculture commodity in Bangladesh. It is well accepted by a wide range of population and so, it has been a good source of protein in the diet of Bangladeshi people. The objective of this study was to assess fillet quality and to determine the proximate composition, amino acid, fatty acid profile of edible portion (muscles) of P. hypophthalmus cultured in Bangladesh. The proximate composition, amino acid and fatty acid profile were determined by AOAC, High Performance Liquid Chromatography and Gas Chromatography, respectively. The live fish samples exhibited the highest quality white color fillets at a great percentage (in farm-live samples 50% and in market-live samples 66.67%).  Muscles of the farmed fish were characterized by 78.5-80.6 % moisture, 0.9-1 % ash, 12.3-13.8 % protein, 3.2-6.6 % lipid, 0.3-2.2 % carbohydrate and 92.8-113 Kcal/100g energy value whereas 75.2-79.6 % moisture, 0.7-1.5 % ash, 11.6-14.7 % protein, 6.4-9.4 % lipid, 0.0-1.8 % carbohydrate and 111-137.5 Kcal/100g energy value were found in the samples of wholesale market on 100g dry weight basis. Significant differences were observed between farmed and marketed Pangas in case of moisture, lipid and energy value. In farmed Pangas, glutamic acid was found predominant (6.3 ± 0.204 %) among the 14 determined amino acids. Among the observed fatty acids, monounsaturated fatty acid was found to be the most predominant, ranging from 39.67 % to 42.09 %, followed by saturated fatty acids, which ranged from 36.97 % to 41.27 %, whereas polyunsaturated fatty acids content was the lowest, ranging from 16.65 % to 21.68 %. Findings of the nutritional composition indicate that Pangas fish may play a major role to fulfill the nutritional demand of the people of Bangladesh.