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Comptes Rendus Chimie
Volume 7, n° 10-11
pages 973-980 (octobre 2004)
Doi : 10.1016/j.crci.2003.12.019
Received : 12 October 2003 ;  accepted : 9 December 2003
Caractérisation et mesure des activités anti-radicalaires d'anthocyanes de plantes du Burkina Faso
 

Éloi Palé , Marie Kouda-Bonafos, Mouhoussine Nacro
Laboratoire de chimie organique appliquée, UFR « Sciences exactes et appliquées », université de Ouagadougou, 03 BP 7021, Ouagadougou 03, Burkina Faso 

*Auteur correspondant.
Résumé

De trois plantes du Burkina Faso, neuf anthocyanosides ont été isolés et caractérisés à l'aide de méthodes chimiques, chromatographiques (CCM, CPG et CLHP), spectrométriques (SM et RMN). Ainsi, les fleurs de Adenium obesum renferment la cyanidine 3-O -(4-O-⍺ -l-rhamnosyl)-β -d-galactopyranoside. La cyanidine 3-O-β -d-glucopyranoside, la cyanidine 3-O -(6-O-⍺ -l-rhamnopyranosyl)-β -d-glucopyranoside, la pélargonidine 3-O-β -d-glucopyranoside et la pélargonidine 3-O -(6-O-⍺ -l-rhamnopyranosyl)-β -d-glucopyranoside sont présentes dans les fleurs de Jatropha integuerrima . Les calices des fleurs de l'oseille de Guinée (Hibiscus sabdariffa ) contiennent la delphinidine 3-O-β -d-glucopyranoside, la delphinidine 3-O -(2-O-β -d-xylopyranosyl)-β -d-glucopyranoside, la cyanidine 3-O-β -d-glucopyranoside et la cyanidine 3-O -(2-O-β -d-xylopyranosyl)-β -d-glucopyranoside. La mesure des activités anti-radicalaires a révélé des propriétés comparables à celles de l'acide ascorbique pris comme référence pour les extraits totaux de H. sabdariffa et pour la cyanidine 3-O-β -d-glucopyranoside isolée de J. integuerrima . Pour citer cet article : É. Palé et al., C. R. Chimie 7 (2004) .

The full text of this article is available in PDF format.
Abstract

Characterisation and antioxidative scavenging activities of anthocyanins in plants of Burkina Faso. Nine anthocyanins were isolated from three plants and their structures elucidated using chemical, GC, MS and NMR methods. Adenium obesum flowers anthocyanins were identified as cyanidin 3-O -(4-O-⍺ -l-rhamnosyl)-β -d-galactopyranoside. The cyanidin 3-O-β -d-glucopyranoside, the cyanidin 3-O -(6-O-⍺ -l-rhamnopyranosyl)-β -d-glucopyranoside, the pelargonidin 3-O-β -d-glucopyranoside and the pelargonidine 3-O -(6-O-⍺ -l-rhamnopyranosyl)-β -d-glucopyranoside were isolated and identified from the flowers of Jatropha integuerrima . From flower chalices of H. sabdariffa , four compounds were established as cyanidin 3-O-β -d-glucopyranoside, cyanidin 3-O -(2-O-β -d-xylopyranosyl)-β -d-glucopyranoside, delphinidin 3-O-β -d-glucopyranoside and delphinidin 3-O -(2-O-β -d-xylopyranosyl)-β -d-glucopyranoside. The DPPH assay allowed us to determine that the antioxidative activities of the crude extract of H. sabdariffa and the Cyanidin 3-O-β -d-glucopyranoside of J. integuerrima were similar to those of ascorbic acid used as reference. To cite this article: É. Palé et al., C. R. Chimie 7 (2004) .

The full text of this article is available in PDF format.

Mots clés : Adenium obesum , Jatropha integuerrima , Hibiscus sabdariffa , Cyanidine, Delphinidine, Pélargonidine, RMN, Activités anti-radicalaires

Keywords : Adenium obesum , Jatropha integuerrima , Hibiscus sabdariffa , Cyanidin, Delphinidin, Pelargonidin, NMR, Antioxydative




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