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Extraction and comparison of chemical constituents of the essential oils isolated from leave and stem of Thymus pubescens Boiss. & Kotschy ex Celak

Farshid Salimi, Ali Shafaghat, Fatemeh Ebrahimzadeh, JafarAbbasi

A comparison of the chemical composition of the essential oils obtained from the leave and stems of Thymus puhesceras Boiss. & Kotschy ex Celak. were carried out. The oils were obtained by Hydrodistillation and were analyzed by GC and GC/MS. Seventeen constituents representing 93.1% of the essential oil of leaves and two components of the stems oil have been identified. The oil fromleave was characterized by higher amount of thymol (35.5%), linalool (21.7%), geraniol (9.0%) and -terpinene (3.5%). In the oil of T. pubescens stems, thymol (84.6%) and linalool (10.1%) were only detected as the predominant compounds. In the both sample oils, the oxygenated monoterpenes compounds predominated over sesquiterpenes.