Essential oil comparison in Thymus daenensis Celak. and Thymus fedtschenkoi Ronniger. in natural Kurdistan habitats

In order to evaluate quantitative and qualitative of Thymus fedtschenkoi and Thymus daenensis essential oil an experiment was conducted in Kurdistan habitats in 2010-2011.The aerial parts of plants were harvested in fall blooming and dried at room conditions. Essential oils extracted by water distillation using Clevenger system. Chemical components were performed and analysis by Gas Chromatography (GC) and gas chromatograph connected to a mass spectrometer (GC/MS) Devices. Results showed that essential oils have more than 20 chemical component. Essential oils yield of Thymus fedtschenkoi was 1.31 percent and thymol (62.15%), P-cymene (12.03%), gamma - terpinene (6.45%) and carvacrol (4.82%) were the most constituents, while Thymus daenensis yeield oil was 2.53% with major constituents which included thymol (70.59%), gamma-terpinene (8.78%), P-cymene (6.11%) and carvacrol (3.43%).