Screening of twenty-four South African Combretum and six Terminalia species (Combretaceae) for antioxidant activities

Show simple item record

dc.contributor.author Masoko, Peter
dc.contributor.author Eloff, Jacobus Nicolaas
dc.date.accessioned 2008-06-11T07:45:04Z
dc.date.available 2008-06-11T07:45:04Z
dc.date.issued 2007
dc.description.abstract The dried leaves of Combretum and Terminalia species (Combretaceae) were extracted with acetone, hexane, dichloromethane and methanol. Thin layer chromatography (TLC) plates were developed under saturated conditions and sprayed with 0.2% 2,2-diphenyl-1-picryl hydrazyl (DPPH) in methanol for antioxidant screening. Visualization of separated bands exhibiting antioxidant activities enabled the localization and the subsequent identification of the potential active compounds. The acetone and methanol extracts displayed the presence of antioxidant activity after spraying the chromatogram with DPPH. Hexane and dichloromethane extracts did not have any antioxidant activity. C. hereroense had the highest number of active compounds, followed by C. collinum ssp. taborense, which were 16 and 10, respectively. Acetone extracts of all tested Combretum species had 53 active bands and methanol had 55. All Terminalia species extracted with acetone and methanol had antioxidant activity. T. gazensis and T. mollis methanol extracts had 11 and 14 active compounds respectively in one of the solvent systems used. The qualitative DPPH assay on TLC was successfully used in this study to systematically assess the total antioxidant activity of the Combretum and Terminalia species extracts. en
dc.format.extent 302370 bytes
dc.format.mimetype application/pdf
dc.identifier.citation Masoko, P & Eloff, JN 2007, 'Screening of twenty-four South African Combretum and six Terminalia species (Combretaceae) for antioxidant activities', African Journal of Traditional Complementary and Alternative Medicines, vol. 4, no. 2, pp. 231-239. [http://www.africanethnomedicines.net/ojs2/index.php/ajtcam/index] en
dc.identifier.issn 0189-6016
dc.identifier.other 7005589445
dc.identifier.other E-6204-2012
dc.identifier.uri http://hdl.handle.net/2263/5886
dc.language.iso en en
dc.publisher African Networks on Ethnomedicines en
dc.rights African Networks on Ethnomedicines en
dc.subject Combretaceae en
dc.subject Terminalia species en
dc.subject Combretum species en
dc.subject Antioxidants en
dc.subject 2, 2, diphenyl-1-picrylhydrazyl (DPPH) en
dc.subject.lcsh Terminalia en
dc.subject.lcsh Antioxidants en
dc.title Screening of twenty-four South African Combretum and six Terminalia species (Combretaceae) for antioxidant activities en
dc.type Article en


Files in this item

This item appears in the following Collection(s)

Show simple item record