SciELO - Scientific Electronic Library Online

 
vol.41 issue1Evaluation of compounds with antioxidant activity in Saccharomyces cerevisiae yeast cellsGentamicin utilization for treating neonates at a public maternity in Belo Horizonte, Minas Gerais (1999) author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Revista Brasileira de Ciências Farmacêuticas

Print version ISSN 1516-9332

Abstract

SANCHES, Andréia Cristina Conegero et al. Antioxidant and antifungal activities of extracts and condensed tannins from Stryphnodendron obovatum Benth.. Rev. Bras. Cienc. Farm. [online]. 2005, vol.41, n.1, pp. 101-107. ISSN 1516-9332.  http://dx.doi.org/10.1590/S1516-93322005000100012.

The antioxidant activity of stem-bark extracts from Stryphnodendron obovatum Benth., including fractions and isolated compounds, was evaluated by DPPH in thin-layer chromatography. All the fractions and isolated compounds showed antioxidant activity. Antifungal activity was determined by the minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) against the yeasts Candida albicans, Candida parapsilosis, Candida krusei and Candida tropicalis. All extracts (CE, EtOAc and FW), subfractions (F1-F12) and the compounds I, II and III were inactive against the yeasts. Against C. parapsilosis and C. albicans, fractions F13-15 and F20 showed moderate antifungal activity, and fractions F16-19 and F21-22 showed good activity. Chemical isolation of the ethyl-acetate fraction resulted in the identification of three compounds: epigallocatechin, gallocatechin and epigallocatechin-(48)-gallocatechin.

Keywords : Stryphnodendron obovatum; Leguminosae; Antioxidant activity; Antifungal activity; Condensed tannins.

        · abstract in Portuguese     · text in English     · pdf in English