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Pakistan Journal of Biological Sciences
Year: 2003  |  Volume: 6  |  Issue: 3  |  Page No.: 202 - 207

Comparative Study of the Antioxidant Effect of Sacoglottis gabonensis Stem Bark Extract, a Nigerian Alcoholic Beverage Additive and Vitamins C and E on the Peroxidative Deterioration of some Common Stored Vegetable Oils in Maiduguri

H.C.C. Maduka, H. M. Uhwache and Z.S.C. Okoye    

Abstract: The study of the protective effects of Sacoglottis gabonensis stem bark extract on the peroxidative deterioration of some common stored vegetable oils in Maiduguri over a period of time was carried out in comparison with vitamins C and E. Lipid peroxidation was monitored as lipid hydroperoxide carbonyls and lipid aldehydes concentrations on a time course basis over a period of 35 days in the vegetable oil test free and their respective antioxidant treated test samples. The treatment with the bark extract reduced the rate of formation of malondialdehyde and malonaldehyde at a rate that compared favourably with the inhibitions obtained with the antioxidants, vitamins C and E. The mechanism of inhibition of the observed anti-oxidant action of the bark extract appeared to be by inhibition of propagation of lipid peroxidation. Results obtained seemed to have confirmed earlier reports that the bark extract could find ready application as a nutritional antioxidant additive.

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