Study of the antimicrobial properties of the essential oil of Rosemary.

摘要

The purpose of this study is to identify the antimicrobial activity of the essential oil of Rosemary plant with tetracycline antibiotic and resistant microorganisms. The aerial parts of rosemary were collected from Research Center for Medicinal Plants at Shahid Bahonar University of Kerman prior to the blooming stage. After drying the plant materials in shade, essential oil was obtained by hydro-distillation method. The study of antimicrobial effect of the oil sample was conducted on nine strains of pathogenic bacteria resistant by disk diffusion assay and measuring the diameters of zones of inhibition from growth. The 41 components were identified in the essential oil of Rosemary, the main constituents are alpha -pinene (15.52%), camphor (11.66%) and verbenone (11.10%) and 1,8-cineole (10.63%). The results showed that the essential oil of Rosemary has an effective controlling and antimicrobial power against all positive and negative bacteria. The antimicrobial impacts of the essential oil of Rosemary plant under investigation can be related with the high percentage of alpha -pinene, camphor, verbenone and 1,8-cineole.