Journal
PHARMACEUTICAL BIOLOGY
Volume 39, Issue 2, Pages 138-141Publisher
SWETS ZEITLINGER PUBLISHERS
DOI: 10.1076/phbi.39.2.138.6248
Keywords
Annona coriacea; Annona crassiflora; Solanum grandiflorum; Solanum lycocarpum; Candida species; ethanol extracts; antifungal activity
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Ethanol extracts from leaves of Annona crassiflora and A. coriacea, and the fruits of Solanum lycocarpum and S. grandiflorum were investigated against 52 strains of Candida albicans, four strains of C. tropicalis and three strains of C. krusei isolated from human immunodeficiency virus-infected individuals with oropharyngeal candidosis, using the agar dilution method. Among the extracts tested, leaves of A. crassiflora was active against all the microorganisms and showed the greatest antifungal activity based on the MIC values. It was observed that 57 strains (96%) were inhibited by the extract from A. crassiflora at a concentration of 64 mug/ml, whereas against 18 strains (30%), it exhibited MIC values as low as 0.5 mug/ml against 10(6) UFC/ml organisms. Candida albicans CBS 562, a reference strain used as a control, showed a similar inhibition pattern. The activities of fluconazole, itraconazole, and ketoconazole were also evaluated and afforded MIC values greater than or equal to 32 mug/ml (19.5% of all strains), greater than or equal to 64 mug/ml (13.6%), and greater than or equal to 128 mug/ml (32.2%), respectively.
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