A Study on the Amino Acid Profiles of Five Fresh Water Fishes Commonly Consumed in Tanzania

B Abdulkarim, POJ Bwathondi, M Suleiman, AS Ringim


Amino acid composition analyses were carried out on five of the most popular and commercial value fresh water fish species: Latesniloticus, Oreochromis niloticus, Rastrineobolaargentea, Limnothrissa. miodon and Stolothrissatanganicae from Tanzanian portions of Lake Victoria and Lake Tanganyika using standard methods and procedures. The dominant amino acids in all the fishes were glutamic acid 14.11 to 14.89g/100g, aspartic acid 9.31 to 9.57g/100g, lysine 6.89 to 8.58g/100g, glycine 6.31 to 7.35g/100g and the least amino acid was cystine 0.81 to 1.12g/100g. There were significant differences (p< 0.05) in the contents among the species. The contents of the amino acids were compared with the {whole hen’s egg; FAO/WHO/UNU, 1985} and FAO/WHO (1991) reference values. To assess the nutritional quality of these fishes predicted protein efficiency ratio (P-PER), Essential amino acid index (EAAI) were calculated. This study confirmed that the fish species EAAS were above the FAO/WHO/UNU, (1985) and FAO/WHO (1991), reference values. These fish species could serve as significant sources of EAAS, and lysine present in them could supplement the corresponding deficiency in plant proteins. The fish species could therefore be recommended for supplementation in the preparation of feeds for weaning and pre- weaning children.

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DOI: http://dx.doi.org/10.24896/10.24896/jzbr.2017421


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