Eucalyptus globulus Labill.

Eucalyptus globulus Labill., sometimes called as Tasmanian blue gum, is a Myrtaceae family flowering tree. The genus Eucalyptus contains around 700 species used for various purposes. Eucalyptus globulus is an intermediate to big evergreen and broad-leafed tree growing up to 70 meters in height and 5-7 feet in diameter. Its leaf oil contains α-pinene, p-cymene, spathulenol, 1,8-cineole, & cryptone, α-limonene, 1,8-cineole, α-pinene, & p-cymene. E. globulus essential oil is a potent source of chemicals with biological activities such as antimicrobial, antinociceptive, antifungal, antiviral, analgesic, antioxidant, and anti-inflammatory properties. Significant in vitro antibacterial activity was found against gram-negative bacteria, such as Escherichia coli, MTCC 40. The anti-diabetic properties of the essential oil increase its market value. This review surveys the main chemical constituents, as well as the in situ & in vitro biological properties of E. globulus that can aid both conservative and advanced systems of medicine.