Analysis of the essential oil of Thymus eriocalyx from Iran

Essential oils isolated by hydrodistillation from the aerial parts of Thymus eriocalyx (Ronniger) Jalas, before flowering and full flowering stage, were analysed by a combination of capillary GC and GC–MS. Seventy components were identified, constituting approximately 92.5% of the oil. The main constituents of the essential oil were thymol (42.8% and 43.1%), linalool (11.1% and 4.0%), γ‐terpinene (6.0% and 6.3%), 1,8‐cineole (5.6% and 3.3%), borneol (3.4% and 4.9%) and α‐terpineol (1.8% and 7.1%) at before flowering (10 days before bloom formation) and full flowering stage, respectively.