In vitro activity of Schinus terebinthifolius (Brazilian pepper tree) on Candida tropicalis growth and cell wall formation.

Lívia A Alves, Irlan de A Freires, Tricia M P A de Souza, Ricardo D de Castro

Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil.

Acta odontológica latinoamericana : AOL 2012

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The aim of this study was to evaluate the in vitro antifungal activity of Schinus terebinthifolius (Brazilian pepper tree) tincture on planktonic Candida tropicalis (ATCC 40042), which is a microorganism associated to oral cavity infections. Minimum Inhibitory Concentration (MIC) and Minimum Fungicidal Concentration (MFC) were determined through the microdilution technique. Possible action of the tincture on fungal cell wall formation was also studied by adding an osmotic protector (0.8M sorbitol) to the microplates. Nystatin was used as standard control and tests were performed in triplicate. S. terebinthifolius was found to have MIC and MFC values of 625 microg/mL on the strain assayed, whereas nystatin showed MIC and MFC of 6.25 microg/mL. Results suggest that S. terebinthifolius tincture acts on fungal cell walls, since the sorbitol test indicated a MIC of 1.250 microg/mL. It may be concluded that S. terebinthifolius has potential in vitro antifungal activity against C. tropicalis strains, and probably acts by inhibiting fungal cell wall formation.

Citation

Lívia A Alves, Irlan de A Freires, Tricia M P A de Souza, Ricardo D de Castro. In vitro activity of Schinus terebinthifolius (Brazilian pepper tree) on Candida tropicalis growth and cell wall formation. Acta odontológica latinoamericana : AOL. 2012;25(3):287-92