Abstract
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Article Information:
Screening of Antibacterial Activity of Six Plant Essential Oils Against Pathogenic Bacterial Strains
Ravi Kant Upadhyay, Pratibha Dwivedi and Shoeb Ahmad
Corresponding Author: Ravi Kant Upadhyay
Submitted: 2010 April, 30
Accepted: 2010 May, 23
Published: 2010 June, 25 |
Abstract:
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In the present investigation antimicrobial activity of six different plant essential oils i.e., citrus
(Citrus lemon), olive (Olea europaea), ajwain (Trachiyspirum ammi), almond (Amygdalus communis), Bavchi
(Psoralea corylifolia) and neem (Azadirachta indica) oils have been evaluated. After bioassays, most of the essential oils were found susceptible to both Gram-positive bacteria such as Lactobacillus acidophilus,
Streptococcus pneumoniae, Staphylococcus aureus, Micrococcus luteus, Bacillus cereus and Gram-negative
bacteria Klebsiella pneumoniae, Escherichia coli. For screening of antimicrobial susceptibility in each essential
oil, both positive and negative controls were set to determine MIC (minimum inhibitory concentration), MBC
values (minimum bactericidal concentration) and growth inhibition zone diameters. Among all essential oils
almond and neem oils were found to be highly bactericidal, as it has shown lowest MIC and MBC values and
high growth inhibition zone diameter in comparison to antibiotics. Present study reveals significantly higher
broad-spectrum antibacterial activity in essential oils than antibiotics i.e., tetracycline, ampicillin and
ciprofloxacin.
Key words: MIC, MBC, antibacterial activity, essential oils, , ,
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Cite this Reference:
Ravi Kant Upadhyay, Pratibha Dwivedi and Shoeb Ahmad, . Screening of Antibacterial Activity of Six Plant Essential Oils Against Pathogenic Bacterial Strains. Asian Journal of Medical Sciences, (3): Page No: 152-158.
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ISSN (Online): 2040-8773
ISSN (Print): 2040-8765 |
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