Abstract
The essential oils obtained from the leaves of Eucalyptus globulus Labil spp. globulus, Eucalyptus radiata Sieb. ex DC spp. radiata and Eucalyptus smithii R. Baker, were analyzed by GC and GC/MS. The oil yields of the three species ranged from 6.0% to 9.0% (dry weight basis). The major components in the oils were 1,8-cineole (70.1–86.4%), α-pinene (1.7–14.0%), Umonene (3.7–5.7%) and α-terpineol (1.9–6.4%).