Eucalyptus globulus was discovered in Tasmania in 1792 by Labillardiere and is commonly known as the ‘Tasmanian blue gum’. No eucalypt has received so much attention from botanists and chemists as this species.
It has been cultivated in all parts of the world and the eucalyptus oil from E. globulus is the best known and most used of all eucalyptus oils. While it was distilled in Tasmania in 1880 it is no longer produced in Australia, having been replaced by higher yielding and better quality oils from other species.
The yield of oil from the leaves and branchlets averages from 0.75 to 1.25 percent.
The cineole content is between 60 – 70 percent and since in many instances the properties of the crude oil do not meet the specifications of most pharmacopoeias, the oil has to be treated to increase the cineole content.