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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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        Abstract - Issue Jul 2007, 28 (3)                                                                                                             Back


In vitro antimicrobial activity and antagonistic effect of essential oils from plant species


Sevil Toroglu*


Department of Biology, Faculty of Arts and Science, Kahramanmaras SutcuImam University, Kahramanmaras-46045, Turkey

(Received: March 14, 2006 ; Revised received: January 15, 2007 ; Accepted: March 25, 2007)

Abstract: Kahramanmaras, is a developing city, located in the southern part of Turkey. Thymus eigii (M. Zohary and P.H. Davis) Jalas, Pinus nigra Arn. sub sp pallasiana and Cupressus sempervirens L. are the useful plants of the Kahramanmaras province and have been under study since 2004 for the traditional uses of plants empiric drug, spice, herbal tea industry, herbal gum and fuel. The study was designed to examine the antimicrobial activities of essential oils of these plants by the disc diffusion and minimum inhibitory concentration (MIC) methods. In addition, antimicrobial activity of Thymus eigii was researched by effects when it was used together with antibiotics and even when it was combined with other essential oils. When the results of this study were compared with vancomycin (30 mcg) and erytromycin (15 mcg) standards, it was found that Thymus eigii essential oil was particularly found to possess stronger antimicrobial activity, whereas other essential oils showed susceptible or moderate activity. However, antimicrobial activity changed also by in vitro interactions between antibiotics and Thymus eigii essential oil, also between essential oils of these plants and that of Thymus eigii causing synergic, additive, antagonist effect.

Key words: Antimicrobial activity, Essential oil, Thymus eigii, Pinus nigra, Cupressus sempervirens, Synergisms-additive-antagonism

PDF file of full length paper is available with author


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