Antimicrobial activity of flavonoids and steroids isolated from two Chromolaena species

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.

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Bibliographic Details
Main Authors: Taleb-Contini,Silvia Helena, Salvador,Marcos José, Watanabe,Evandro, Ito,Izabel Yoko, Oliveira,Dionéia Camilo Rodrigues de
Format: Digital revista
Language:English
Published: Divisão de Biblioteca e Documentação do Conjunto das Químicas da Universidade de São Paulo 2003
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-93322003000400007
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Description
Summary: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.