Effects of local processing method ( Kilishi) on nutrient profiles of Heterotis niloticus and Hyperopisus bebe occidentalls, in Zaria

Abstract

The proximate assessment of raw fish flesh and kilishi produced from Heterotis niloticus (Cuvier) and Hyperopisus bebe occidenta/is (Gunther), in Zaria were carried out using standard procedure (AOAC methods). The results indicate that the percentage crude protein, crude fibre, lipid, ash, nitrogen free extract and moisture levels were 73.57, 1.29, 12.10, 6 .09, 6.96 and 4.38 respectively for H. niloticus . kilishi which were significantly higher (P < 0.05) than those obtained for the raw fish except for
nitrogen free extract and moisture which were significantly lower ( P < 0.05), with values of 63.50, 0.00, 8.73, 5.00, 22.78 and 59. 93,  respectively. Similarly, values of 70.47, 1.11, 1 5.36, 6.64, 7. 1 9 and
5.23 for percentage crude protein, crude fibre, lipid, ash, nitrogen free extract and moisture levels respectively, were obtained for H. bebe  occidentalis kilishi. Apart from the crude fibre ( 1 . 1 1 %), nitrogen free extract (7.19%) and moisture (5.23%) all other parameters were   statistically higher (P < 0.05) than those of raw fish. The kilishi method of fish processing was found to induce positive nutritive changes in both species.

Key Words: Proximate composition, Heterotis mloticus, Hyperopisus bebe occidentalis, kilishi.