This study evaluated the antimicrobial activity of the ethanol extract of Annona crassiflora Mart., against the fungus, Candida albicans present in the oral microbiota. The tests showed that the fractions of ethanol extract of the root bark and wood root of A. crassiflora showed a positive result. Of the strains studied, three showed sensitivity to 12 fractions and sub-fractions of A. crassiflora (66%). In the strains studied, strain 05 was the one that proved the most sensitive statistically (p <0.05). Their structures were determined using spectral techniques (NMR 1H and 13C) and based on literature data.
Key words: Annona classiflora, Candida albicans, antimicrobial activity.
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