Constituents of the essential oil of Thymus schimperi

Abstract

The essential oils of the aerial parts of Thymus schimperi growing in two different localities of Ethiopia were analysed using GC, GC-MS, 1H- and 13C-NMR data. T. schimperi oil from plant material collected in Dinshu (Bale Province) was found to contain thymol (50%), γ-terpinene (12.1%), carvacrol (10.1%) and p-cymene (10.0%) as the major constituents whereas carvacrol (66.2%) and γ-terpinene (13.2%) were shown to dominate in the same species obtained from Addis Ababa. Thymol (48.6%) and γ-terpinene (19.8%) were the major constituents of T. vulgaris oil acclimatized in Wondo Genet, Ethiopia.