Essential Oil Composition of Teucrium montbretii subsp. montbretii Benth. (Lamiaceae)

Essential oils obtained by hydrodistillation of Teucrium montbretii subsp. montbretii Benth. (Lamiaceae) from Hatay (Turkey), were analyzed by GC/MS. Forty-four volatile components were identified in the oils, representing 98.12 % of the total oils. The sample was yielded 0.24% of yellowish oil (w/w), with a pleasant smell. The main essential oil compounds of the plant were trans-caryophyllene, germacrene-D and caryophyllene oxide, representing 66.7%. Trans-caryophyllene, which has the highest ratio (36.78%), also known as β-caryophyllene, is a component that is the main constituent of many plants included in the sesquiterpene chemical class. Second main component germacrene-D (19.87%) is also sesquiterpene and detected in the essential oil of many plants. α-Copaene, humulene, aromadendrene and globulol were the other components detected at ratio of 5.45%, 4.29%, 3.99% and 3.35%, representing 17.08%, respectively.