[Identification of essential oil components of Thymus daenesis Celak. in field condition in Qazvin]

ABSTRACT

Thyme is a perennial plant from Lamiaceae family and an important medicinal plant worldwide. Thymus daenensis is distributed in Iran and used as a traditional medicine. Identification of Thymus daenesis components cultivated in Qazvin. Aerial parts of Thymus daenensis were collected from a research farm [Qazvin Agriculture and Natural Resources Research Center] at flowering stage in 1385. The essential oil was initially prepared by hydro-distillation technique followed by GC and GC/MS for determination of chemical compositions. The ratio of aromatic components to its dry weight in essential oil of Thymus daenensis cultivated in Qazvin was measured at 2.8 +/- 0.1% [w/w]. Twenty four components were identified. The main constituents of the essential oil were thymol [74.61%], p-cymene [4.6%], ?-terpinene [4.48%] carvacrol methyl ether [4.27%], 1.8 cineol [1.64%], borneol [1.61%], and carvacerol [1.40%]. The results of this study showed that the Thymus daenensis essential oil is rich in monoterpene phenols, especially thymol