Eucalyptus is a large tree belonging to the family Myrtaceae. It is a tree of multiple uses and benefits. The essential oil extracted from its leaves, branch tips and fruits are rich in phytochemicals like eucalyptol, 1,8-cineole, limonene, citronellal, citral, eudesmol, α and β-pinene, p-cymene, terpinen-4-ol, terpineol, α–phellanderene and 9β-sitosterol etc. These compounds can be extracted by various methods like solvent extraction method, hydro-distillation and supercritical fluid extraction.