GC-MS analysis of the Eucalyptus obliqua L'Hér. (myrtaceae) chemical composition

Since there are few studies regarding Eucalyptus obliqua and that it is just starting to receive the attention in terms of many potential effects and properties, the aim of this study was to analyse its essential oil by GC-MS. The major detected compound in the studied essential oil was 1,8-cineole (eucalyptol) with 64.7% in content, followed by α-pinene (12.6% in content), γ-terpinene (7.4% in content), limonene (3.9% in content) and p-cymene (3.2% in content). Considering the fact that Eucalyptus species in great extent owe their medicinal value to the main constituent of their essential oil → 1,8-cineole (eucalyptol) it was expected that eucalyptol would be the most abundant component. Beside the mentioned components there were 20 constituents which in total make less than 10.00% of the studied essential oil