A comparative study on chemical composition and antimicrobial activity of essential oils from three species from Uzbekistan.

Essential oils obtained from the aerial parts of and were determined using GC-FID and GC-MS methods. A total of 76 components were identified in the three species representing 97.12, 88.34, and 96.41% of the whole oil, respectively. High percentages of thymol (20.41%) and camphor (14.46%) exist in oil. Methyl palmitate predominates in oil representing 51.15% whereas thymol (35.76%) is the major constituent in essential oil. GC-MS analyses showed that and are more closely related comparable to The antimicrobial activity of the essential oils was assessed against different microorganisms using agar-disc diffusion and broth microdilution assay. Among the three tested species, the essential oil of showed the highest antibacterial activity.