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Antimicrobial and antifungal properties of the essential oil and methanol extracts of Eucalyptus largiflorens and Eucalyptus intertexta

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Author(s): Safaei-Ghomi Javad | Ahd Atefeh

Journal: Pharmacognosy Magazine
ISSN 0973-1296

Volume: 6;
Issue: 23;
Start page: 172;
Date: 2010;
Original page

Keywords: Antimicrobial activity | Eucalyptus largiflorens | Eucalyptus intertexta | minimum inhibitory concentration | zone of inhibition

ABSTRACT
This study was conducted to evaluate the in vitro antimicrobial properties of essential oil, its major component, 1,8-cineole, and extracts of two Eucalyptus species, Eucalyptus intertexta and Eucalyptus largiflorens. Minimum inhibitory concentration (MIC) of the extracts was calculated by broth dilution method and the zone of inhibition was studied by agar disk diffusion method. Gentamicin (10 μg/disk) and rifampin (5 μg/disk) were used as reference controls for antibacterial studies and nystatin (100 μg/disk) for antifungal studies. The results of MIC study revealed that the essential oil has a stronger activity and broader spectrum than those of methanol extracts. It is interesting to point out that the oils had even greater potential of antimicrobial activities than those of 1,8-cineole as their main component.
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