2005

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Technological Properties and Biochemical Studies of Bonga Ethmalosa fimhriata
(Society of Fisheries Technologists (India)Cochin, 2005) Akande, G.R; Faturoti, E.O
Size measurements, anatomical composition and biochemical evaluations of bonga (Ethynalosa fimhriata) muscle were carried out. The mean values of length and weight recorded for bonga over a period of 2 months were 22.12+1.27 cm and 136.82±13.27 g respectively. Size measurements as shown by length and weight data for the one-year period suggested a positive effect of season on size. The pattern of change in weight throughout the study period was similar to that of change in length and gave a correlation coefficient " r " of 0.82 significant at p<0.05. Anatomical fractionation showed that bonga contained on the average 61.1% trunk, 23.7% head and 16.3% viscera. Total wastes (head and viscera) derived from bonga were 39.9% of the total body weight. The proximate chemical composition analysis showed that the muscle of bonga contained between 74.14% and 77.54% moisture, 1.12-5.69% lipid, 18.73- 21.54% protein and 1.57- 2.14% ash. The chemical composition did not vary significantly except in lipid content where a significant (p<0.05) inverse relationship between moisture and lipid content was observed. Triglycerides accounted for over 5% of lipid in bonga. The major fatty acid component in the lipid of bonga were C 16:0, C 18:0, C 18:1, C 20:4, C 20:5and C 22:6.