Sensibilidade de Staphylococcus sp. oxacilina resistentes ao óleo essencial de capim-limão (Cymbopogonflexuosus (steud) watts)

Abstract

To evaluate the sensitivity of Staphylococcus sp. oxacillin strains resistant to the essential oil of micoencapsulated lemon grass (Cymbopogonflexuosus (Steud) Wats). Material and Methods: Strains of Staphylococcus sp., of animal origin and identified as resistant to oxacillin were analyzed for sensitivity to the essential oil of microencapsulated lemon grass. The analyzes were performed using a macrodilution method in tubes and the Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) were defined. The tests were performed in triplicates and the results were analyzed by regression analysis, by the Model Probit, using the statistical program R. Results and Discussion: Lemon grass essential oil in the MIC test, reacting winth the microorganisms in study, showed 100% efficacy at the concentration of 160μL / mL and 80% at the concentration of 80μL / mL. The CBM was observed in 25% of the strains at the concentration of 160 μL / mL. It was observed that for lemongrass in the CIM and CBM, there was 98% and 99% reliability by the equation of the statistical model, respectively. Conclusion: Microencapsulated Cymbopogonflexuosus (Steud) Wats oil showed inhibitory and bactericidal activity against resistant Staphylococcus sp.