Chemical Profle of the Dittrichia graveolens (Desf.) Greuter Essential Oil of Lebanese Origin

Abstract

Essential oils isolated from the aerial parts of two different Lebanese wild populations of Dittrichia graveolens were analyzed by GC and GC/MS. It was shown that around 90% of the total composition consisted of oxygenated compounds. The four major components identified were bornyl acetate (70.6–72.3%), T-cadinol (1.4–13.4%), borneol (2.7–12.4%), and caryophyllene oxide (1.9–2.3%), in addition to 21 minor ones. Oils from the two populations possessed a high content of bornyl acetate but differed with respect to borneol and T-cadinol. In comparison with oils of D. graveolens from other populations, it was found that the oil of D. graveolens of Lebanese origin was distinctly richer in oxygenated compounds.

Key Word Index:

• Dittrichia graveolens
• Inula graveolens
• Asteraceae
• essential oil composition
• borneol
• bornyl acetate
• T-cadinol