Oil Content variation and Antimicrobial activity of Eucalyptus leaves oils of three different Species of Dehradun, Uttarakhand, India

Bachheti, R. K.; Joshi, Archana; Singh, Arjun
April 2011
International Journal of ChemTech Research;Apr-Jun2011, Vol. 3 Issue 2, p625
Academic Journal
Eucalyptus is a tall, evergreen tree, native to Australia and Tasmania, successfully introduced worldwide, now extensively cultivated in many other countries including India. Aim of this study is to determine the oil content variation and antimicrobial activity of three different eucalyptus species of Dehradun region. The leaves of three different species of Eucalyptus - Eucalyptus globulus, Eucalyptus tereticornis and Eucalyptus robusta were collected from nearby area of Dehradun After drying the plant materials in shade, their essential oils were obtained by hydrodistillation.The oil yield (%w/w) of Eucalyptus globulus was (1.05%) , Eucalyptus tereticornis was (0.51%) while of Eucalyptus robusta was (0.79%). The essential oils extracted was tested for antimicrobial activity against Escherichia coli, Salmonella typhi, Pseudomonas aeruginosa , Streptococcus Lactobacillus and Staphylococcus aureus. The Eucalyptus globulus essential oil shows an max zone of inhibition of 14mm diameter against E.coli, Eucalyptus tereticornis essential oil shows an maximum zone of inhibition 7mm diameter against Pseudomonas, while Eucalyptus robusta essential oil shows an maximum zone of inhibition of 11mm against Lactobacillus.


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