Resumo

TALEB-CONTINI, Silvia Helena et al. Antimicrobial activity of flavonoids and steroids isolated from two Chromolaena species. Rev. Bras. Cienc. Farm. [online]. 2003, vol.39, n.4, pp. 403-408. ISSN 1516-9332.  http://dx.doi.org/10.1590/S1516-93322003000400007.

The crude extracts (dichloromethanic and ethanolic) and some compounds (8 flavonoids and 5 steroids) isolated from Chromolaena squalida (leaves and stems) and Chromolaena hirsuta (leaves and flowers) have been evaluated against 22 strains of microorganisms including bacteria (Gram-positive and Gram-negative) and yeasts. All crude extracts, flavonoids and steroids evaluated have been shown actives, mainly against Gram-positive bacteria.

Palavras-chave : Chromolaena; Asteraceae; Flavonoids; Steroids; Antimicrobial activity.