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The red propolis is a new type of propolis founded in Brazil with large biological action. This study evaluated the antimicrobial activity of ethanol extract and fractions of hexane, chloroform and acetanolica of propolis from the apiary of the state of Alagoas. The microbial strains used were: Shigella flexneri, Proteus vulgaris, Staphylococcus, Klebsiella pneumoniae, Proteus mirabilis, Pseudomonas aeruginosa, Staphylococcus aureus, Escherichia coli and Candida albicans. The ethanolic extract showed activity against Gram-positive strains (100%), Gram-negative (62.5%) and fungi (100%) with efficiency against 76.9% of all the analyzed strains. The hexanic fraction showed efficiency against 76.9% as observed with the ethanolic extract, though the chloroform fraction showed activity against 92.3% of the strains analyzed. Klebsiella pneumoniae was the only resistant species. The ethyl acetate was the fraction that showed the best antimicrobial activity with efficiency against 100% of all strains analized. Excellent results were observed to Candida albicans mainly with ethyl acetate fraction with the value of minimum inhibitory concentration (MIC) similar to those observed to Gram-positives bacteria. We concluded that the partitions of red propolis showed excellent antimicrobial activity mainly against Gram-positive microorganisms and Candida albicans. Furthermore, we observed the ethyl acetate fraction stood out as a promissory biotechnological product.

Atividade antimicrobiana de frações da própolis vermelha de Alagoas, Brasil