Chemical composition of the essential oil of A.Kermanensis from Taftan aera by GC/MS technique

ABSTRACT: The aerial parts of A. Kermanensis were subjected to hydro distillation by a Clevenger-type apparatus to produce an oil in 1.87% w/w yield. It was then analyzed by GC/MS . Identification of the compounds was carried out by camparison of their mass spectra with those of authentic sample together with the relative retention indices. 37components were identified representing97.04% of the oil. It contained mainly oxygenated monoterpenes (71.68%) with 1,8 cineole (56.55%), Borneol (5.28%) Geranyl perpionate (4.05%), camphor (4.48%), beta Thujone (2.84%), 4-Terpineol (2.77%) and unknown compound (2.94%) as the major constituents. The amount of Sesquiterpenes were representing (1.30% w/w) of the total oil. The results clearly showed the richness of oil in monoterpenes, which may be due to the collection of plant material during the flowering