Composition of fruit volatiles and annual changes in the volatiles of leaves of Eucalyptus camaldulensis Dehn. growing in Greece

The chemical components of the essential oils obtained from fruits of Eucalyptus camaldulensis and of those obtained from its leaves during the course of one year, were analysed by GC and GC–MS. From the identified 52 constituents of the fruit essential oil, representing the 62.0% of the total oil, spathulenol (19.0%), β‐pinene (8.8%) and p‐cymene (4.8%) were found as the main components, while the concentration of 1,8‐cineole, the main leaf constituent, was relatively low (3.8%). The composition of the leaf essential oil varied qualitatively and quantitatively over the course of 1 year. Generally, from the identified 43 constituents representing the 74.7–94.2%, the main constituent was 1,8‐cineole (25.3–44.2%). Although spathulenol was the second most abundant constituent (highest concentration 19.2%), there were months when its concentration was exceptionally low (0.5%).