Volatile oil constituents of alecost [Tanacetum balsamita L. ssp. balsamitoides (Schultz-Bip.)] growing wild in North-West of Iran
The hydrodistilled essential oil of aerial parts of Tanacetum balsamita L. ssp. balsamitoides (Schultz-Bip.) Asteraceae growing spontaneously in Tabriz (North-West of Iran) was analyzed by GC-MS. Twenty-three components comprising 96.83% of the total essential oil were identified. Oxygenated monoterpens (87.93%) were the major class of identified components. Sesquiterpene hydrocarbons (6.66%) were the second class. Main monoterpene constituents of the aerial parts essential oil were carvone (49.11%), α-thujone (24.6%), β- thujone (2.68%) and 1,8-cineole (2.59%). β-bisabolene (4.44%) a sesquiterpene hydrocarbone was also present in significant amounts. According to the volatile oil profile, T. balsamita L. ssp. balsamitoides (Schultz-Bip.) plant studied in the present experiment was belong to the carvone/α-thujone chemotype that produces appreciable amounts of β-bisabolene.