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Molecules 2009, 14(5), 1702-1712; doi:10.3390/molecules14051702

Chemical Compositions and Antibacterial Activities of the Essential Oils from Aerial Parts and Corollas of Origanum acutidens (Hand.-Mazz.) Ietswaart, an Endemic Species to Turkey

1
Abant Izzet Baysal University, Mudurnu Vocational School of Higher Education, Mudurnu, Tr-14800 Bolu, Turkey
2
Abant Izzet Baysal University, Biology Department, Tr-14280 Bolu, Turkey
3
Ordu University, Faculty of Agriculture, Field Crops Department, Ordu, Turkey
4
Ankara University, Faculty of Agriculture, Field Crops Department, 06110 Diskapi, Ankara, Turkey
*
Author to whom correspondence should be addressed.
Received: 10 February 2009 / Revised: 23 April 2009 / Accepted: 24 April 2009 / Published: 30 April 2009
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Abstract

Essential oils extracted by hydrodistillation from the aerial parts and corollas of Origanum acutidens (Hand.-Mazz.) Ietswaart, an endemic Turkish flora species, were analyzed by GC-MS. The amounts of essential oil obtained from the aerial parts and the corollas were 0.73% and 0.93%, respectively. Twenty-five components in both the aerial parts oil and the corolla oil, representing 95.11% and 93.88%, respectively, were identified. The aerial parts and corolla oils were characterized by the predominance of two components: p-cymene (9.43% and 17.51%) and carvacrol (67.51% and 52.33%), respectively. The essential oils were also evaluated for their antimicrobial activity against ten bacteria by the disc diffusion assay. Our findings showed the following order in the sensitivity to the essential oils, as indicated by the corresponding inhibition zones: Proteus vulgaris > Salmonella typhimurium > Enterobacter cloacae > Klebsiella pneumonia > Escherichia coli > Serratia marcescens > Pseudomonas aeruginosa for the aerial parts essential oil, and Salmonella typhimurium > Proteus vulgaris > Enterobacter cloacae > Escherichia coli > Klebsiella pneumoniae > Serratia marcescens > Pseudomonas aeruginosa for the corolla essential oil. The studied essential oils thus exhibited a broad-spectrum of activity against both Gram-positive and Gram-negative bacteria, whereas the tested Gram-positive bacteria were more susceptible to the essential oil samples.
Keywords: Origanum acutidens (Hand.-Mazz.); Essential oil; GC-MS analysis; Antibacterial activity Origanum acutidens (Hand.-Mazz.); Essential oil; GC-MS analysis; Antibacterial activity
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Cosge, B.; Turker, A.; Ipek, A.; Gurbuz, B. Chemical Compositions and Antibacterial Activities of the Essential Oils from Aerial Parts and Corollas of Origanum acutidens (Hand.-Mazz.) Ietswaart, an Endemic Species to Turkey. Molecules 2009, 14, 1702-1712.

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