Susceptibility of oral pathogenic microorganisms to aqueous and ethanolic extracts of Stryphnodendron adstringens (barbatimão)

Résumé

Stryphnodendron adstringens, also known as “barbatimão”, is a native plant from the ";;;;;;;cerrado";;;;;;; area in Brazil. It has been reported that barbatimão extracts possess several biological activities, including antimicrobial and healing affects, among others. The aim of this study was to evaluate the in vitro susceptibility of oral pathogenic bacteria and yeast to barbatimão aqueous and ethanolic extracts. Susceptibility tests for S. mutans (ATCC 70069), Staphylococcus aureus (ATCC 12692), Actinobacillus actinomycetemcomitans (ATCC 29522) and Candida albicans (ATCC 18804) to barbatimão aqueous extract (BEA) and ethanolic extract (BEE) solutions were performed. MIC was also determined for each microorganism. The results showed that BEA possess activity against bacteria, and very small efficacy against yeast. BEE showed both antibacterial and antifungal activities. It can be concluded that barbatimão extracts have antimicrobial activity against oral pathogenic microorganisms. Barbatimão extracts could be considered a potential alternative for the treatment  of infectious conditions of the oral cavity.