Polyphenol contents and antioxidant activities of five Indigofera species (Fabaceae) from Burkina Faso.

Publication: Pakistan journal of biological sciences: PJBS
Publication Date: 2008
Study Author(s): Bakasso, S;Lamien-Meda, A;Lamien, C E;Kiendrebeogo, M;Millogo, J;Ouedraogo, A G;Nacoulma, O G;
Institution: Laboratoire de Biochimie et de Chimie Appliquées, UFR/SVT, Université de Ouagadougou, 03 BP 7021 Ouaga 03, Burkina Faso.
Shortcut link to this study: http://science.naturalnews.com/pubmed/18817242.html
Aqueous acetone extracts prepared from five Indigofera species of Burkina Faso, namely Indigofera colutea (Burm.) Murril., I. macrocalyx Guilld et Perr., I. nigritana Hook f., I. pulchra willd. and I. tinctoria L., were investigated for their phytochemical composition and their antioxidant activities. Standard methods and TLC were used to screen the phytochemical composition. The total phenolic and flavonoid content of extracts were assessed by Folin-Ciocalteu and AlCl3 methods, respectively. These extracts were also evaluated for their antioxidant potentials using ferric reducing antioxidant power (FRAP), 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azinobis(3-ethylbenzothiazoline-6-sulphonate) (ABTS) assays. Flavonoids, saponins, quinones, sterols/triterpenes and Tannins were present in all these species except for I. pulchra where quinones were not found. Gallic acid, caffeic acid, rutin and Myricetin in I. colutea; gallic acid, quercitrin, Myricetin in I. tinctoria; galangin and myricetin in I. macrocalyx were identified by thin layer chromatography. Among these, I. colutea, I. tinctoria, I. nigritana and I. macrocalyx, which had the highest phenolic content, were also found to possess the best antioxidant activities. The results indicated a good correlation between antioxidant activities and total phenolic content (p<0.05 for FRAP/DPPH and DPPH/ABTS and p<0.01 for FRAP/ABTS). These plants represent promising sources of natural Antioxidants and these findings give scientific bases to their ethnopharmacological uses.
PMID: 18817242

Have comments? Post them here:

comments powered by Disqus

Get breaking news about nutritional cures, dangerous chemicals, superfoods and more.

Subscribe to the FREE Natural News email newsletter. Your privacy is protected.