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Publication Type J
Authors Oueslati, S., R. Ksouri, A. Pichette, S. Lavoie, K. Girard-Lalancette, V. Mshvildadze, C. Abdelly and J. Legault
Title A new flavonol glycoside from the medicinal halophyte Suaeda fruticosa
Source Natural Product Research
Author Keywords flavonol glycoside high-performance liquid chromatography mass spectrometry nuclear magnetic resonance Suaeda fruticosa oxygen radical absorbance capacity antioxidant properties
Abstract A new flavonol glycoside, namely 3-(alpha-rhamnopyranosyl-(1 -> 2)-[beta-xylopyranosyl-(1 -> 6)]-beta-glucopyranosyloxy) isorhamnetin was reported from methanol extracts of aerial parts of Suaeda fruticosa for the first time. In this work, liquid chromatography coupled to atmospheric pressure chemical ionisation mass spectrometry, high-resolution mass spectrometry and nuclear magnetic resonance spectroscopy were used to identify this new compound. Structure was elucidated on the basis of extensive spectroscopic analysis, including HSQC, HMBC and H-1-H-1 COSY. Antioxidant potentialities of a pure compound were evaluated. The estimation of antioxidant capacities using oxygen radical absorbance capacity (ORAC method) and a cell based-assay (WS1) indicated that this new flavonol exhibited the highest antioxidant activities with an ORAC value of 5.0 +/- 0.3 mu mol Trolox/mu mol and inhibited the t BH-induced oxidation of 2',7'-dichlorofluorescin with an IC50 value of 4.9 +/- 0.6 mu M.
Author Address [Oueslati, Samia; Ksouri, Riadh; Abdelly, Chedly] Ctr Biotechnol Technopole Borj Cedria CBBC, Lab Plantes Extremophiles, Hammam Lif 2050, Tunisia. [Oueslati, Samia; Pichette, Andre; Lavoie, Serge; Girard-Lalancette, Karl; Mshvildadze, Vakhtang; Legault, Jean] Univ Quebec Chicoutimi, Lab LASEVE, Chicoutimi, PQ G7H 2B1, Canada. Oueslati, S (reprint author), Ctr Biotechnol Technopole Borj Cedria CBBC, Lab Plantes Extremophiles, BP 901, Hammam Lif 2050, Tunisia. oueslati_samia@yahoo.fr
ISSN 1478-6419
ISBN 1478-6419
29-Character Source Abbreviation Nat. Prod. Res.
Year Published 2014
Volume 28
Issue 13
Beginning Page 960-966
Digital Object Identifier (DOI) 10.1080/14786419.2014.900771
Unique Article Identifier WOS:000338987800005
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