ASSESSMENT OF BIOCHEMICAL COMPOSITION AND SAFETY INDEX OF THE BAGRID CATFISH (CHRYSICHTHYS NIGRODIGITATUS) ACROSS BODY PARTS

Abstract

The economic value of the bagrid catfish lies in its desirable taste and rich nutritional profile. This study examined the proximate composition, energy distribution, mineral content, and mineral safety index (MSI) of different anatomical parts (head, body, and tail) of the bagrid catfish (Chrysichthys nigrodigitatus). Proximate analysis revealed significant variations across parts, with protein content progressively increasing from head (46.99%) to tail (70.22%), while crude fat was highest in the body (19.38%) and lowest in the tail (7.37%). The nitrogen-free extract (NFE) was highest in the head (13.70%) and lowest in the tail (4.74%). The energy contribution varies by body part, averaging 1708.77 kJ/100 g. Protein was the main energy source (1004.27 kJ/100 g), highest in the tail (1193.80 kJ/100 g). Fat contributed 561.50 kJ/100 g on average, while carbohydrates were minimal (143.03 kJ/100 g). Tail protein energy utilization peaked at 47.00 kJ. Mineral analysis showed spatial variation, with Ca and Mg highest in the body and head, respectively, and Na and K most concentrated in the head. Mineral ratios indicated acceptable Ca/Mg, Na/K, and Na/Mg balances, though Ca/P and K/(Ca+Mg) ratios fell below ideal levels. MSI evaluation revealed potential excesses of Ca, Mg, and Na in certain parts, particularly the head, which exceeded safety thresholds for Na. These findings underscore the nutritional value and potential safety considerations in the consumption of different parts of C. nigrodigitatus, with implications for dietary recommendations.