Fatty acid profile and stability of oil from the belly flaps of Nile perch (Lates niloticus)
Loading...
Date
2008
Journal Title
Journal ISSN
Volume Title
Publisher
Food Chemistry
Abstract
Oil extracted from the belly flaps of Lake Victoria Nile perch (Lates niloticus) was evaluated for fatty acid composition, contents of
vitamin A, b-carotene and a-tocopherol, and oxidative stability. The oil was found to contain substantial amount of palmitic, palmitoleic, stearic, oleic, docosapentaenoic and docosahexaenoic fatty acids (FAs) and had high vitamin A content (3.94 ± 0.02 to 5.90 ± 0.02 mg/100 g of oil). Docosahexaenoic acid (10.45 ± 0.38%), docosapentaenoic acid (5.30 ± 0.60%) and eicosapentaenoic acid (3.63 ± 0.05%) were the most dominant polyunsaturated fatty acids (PUFAs). Ratios of PUFAs to saturated FAs were in the range 0.68 ± 0.02 to 0.74 ± 0.03, while the ratio of total x-3 FAs to total x-6 FAs was 0.85 ± 0.02 to 0.95 ± 0.08. The oils showed exceptional resistance to accelerated oxidation at 65 C probably because of its high content of b-carotene (2.93 ± 0.03 to 4.69 ± 0.01 mg/100 g of oil) and a-tocopherol (2.11 ± 0.03 to 11.4 ± 0.92 mg/100 g of oil). From the results, it can be concluded that Nile perch oil is a rich source of essential fatty acids and vitamin A.
Description
Keywords
Nile perch, Lake Victoria, Belly oil, Fatty acid profile, Oxidative stability
Citation
Ogwok, P., Muyonga, J. H., & Sserunjogi, M. L. (2008). Fatty acid profile and stability of oil from the belly flaps of Nile perch (Lates niloticus). Food Chemistry, 108(1), 103-109.