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Antioxidant activities of extracts from Combretum hartmannianumand Guiera senegalensison the oxidative stability of sunflower oil

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dc.contributor.author Mariod, A.
dc.contributor.author Matthäus, B.
dc.contributor.author Hussein, I. H.
dc.date.accessioned 2018-08-01T08:08:33Z
dc.date.available 2018-08-01T08:08:33Z
dc.date.issued 2016
dc.identifier.uri http://repo.uofg.edu.sd/handle/123456789/1061
dc.description Emir. J. Agric. Sci. 2006. 18 (2): 20-28 http://www.cfa.uaeu.ac.ae/research/ejas.htm en_US
dc.description.abstract This study was carried out to investigate the total phenolic compounds beside the potential antioxidant activity of Guiera senegalensisand Combretum hartmannianumextracts. The content of total phenolics inthe extracts was determined spectrometrically according to the Folin-Ciocalteu procedure and calculated as gallic acid equivalents (GAE). The antioxidative activities by beta-carotene linoleic acid and DPPH methods of extracts from Guiera senegalensisleaves, (GSL), Guiera senegalensisroots (GSR) andCombretum hartmannianum leaves (CHL), were evaluated in sunflower oil in the dark at 70°C. Total phenolic compounds were 240.1, 275.6 and 253.4 mg/g respectively. The methanolic extracts of (GSL), (GSR) and (CHL), were markedly effective in inhibiting the oxidation of linoleic acid and subsequent bleaching of ß-carotene in comparison with the control. Plantsextracts (500 mg) effectively inhibited the formation of peroxides in sunflower oil and showed the highest antioxidative activity compared with 20 mg BHA. The GSL extract is the most effective followed by the GSR and CHL extract. The antioxidant activity ofthe extracts measured by DPPH free radical showed high reduction of 50% DPPH in CHL extract followed by GSR and GSL. Clear differences were found between the control and sunflower oil containing C.hartmannianum and G. senegalensisextracts or BHA, which decreased and slowed the rate of peroxide formation resulting in lower PVs after 96 h of storage at 70 °C. en_US
dc.language.iso en en_US
dc.publisher Emir. J. Agric. Sci. en_US
dc.subject Antioxidant activity en_US
dc.subject ß-carotene/linolenic acid en_US
dc.subject Combretum hartmannianum, 1 en_US
dc.subject 1-diphenyl-2 picrylhydrazyl (DPPH) en_US
dc.subject Guiera senegalensis en_US
dc.subject phenolic compounds. en_US
dc.title Antioxidant activities of extracts from Combretum hartmannianumand Guiera senegalensison the oxidative stability of sunflower oil en_US
dc.type Article en_US


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