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| LETTER TO THE EDITOR |
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| Year : 2013 | Volume
: 45
| Issue : 2 | Page : 201-202 |
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Antimicrobial activities of the essential oils of endemic Stachys rupestris and Stachys amanica against multi-resistant bacteria
Aysel Ugur1, Nurdan Sarac2, Omer Varol3
1 Department of Basic Science, Section of Medical Microbiology, Faculty of Dentistry, Gazi University, Ankara, Turkey
2 Department of Biology, Faculty of Science, Mugla Sitki Kocman University, Mugla, Turkey
3 Department of Biology, Faculty of Science and Arts, Aksaray University, Aksaray, Turkey
| Date of Web Publication | 11-Mar-2013 |
Correspondence Address:
Aysel Ugur
Department of Basic Science, Section of Medical Microbiology, Faculty of Dentistry, Gazi University, Ankara
Turkey
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/0253-7613.108327
How to cite this article:
Ugur A, Sarac N, Varol O. Antimicrobial activities of the essential oils of endemic Stachys rupestris and Stachys amanica against multi-resistant bacteria. Indian J Pharmacol 2013;45:201-2 |
How to cite this URL:
Ugur A, Sarac N, Varol O. Antimicrobial activities of the essential oils of endemic Stachys rupestris and Stachys amanica against multi-resistant bacteria. Indian J Pharmacol [serial online] 2013 [cited 2023 Sep 27];45:201-2. Available from: https://www.ijp-online.com/text.asp?2013/45/2/201/108327 |
Sir,
The global issue of emerging resistant infections has led to the search for new antimicrobial agents. Medicinal plants are a source of renewed interest as ma ny of them have been used in folk medicine to treat infections. Pharmacological studies have confirmed that the extracts or components of the plants belonging to the genus Stachys exert significant antimicrobial effects. [1],[2] Of them, Stachysrupestris (Montbret et Aucher ex Bentham) and Stachysamanica (P.H. Davis) are indigenously found in South Anatolia in Turkey. [3] The Stachys species have been reported to treat genital tumors, sclerosis of the spleen, inflammatory tumors, and cancerous ulcers. [4] However, their antimicrobial activity has not been documented. In this study, the essential oils of S. rupestris and S. amanica against different microorganisms, including multi-resistant bacteria, were evaluated for their antimicrobial activity.
The specimens of S. rupestris and S. amanica were collected at the flowering stage during the months of April-July from Kahramanmaras, Turkey and a sample of each was deposited in the herbarium of the Faculty of Science, University of Mugla, Turkey (Herbarium No: O.V. 2378 and O.V. 2379).The essential oils of the dried aerial parts were obtained via hydrodistillation by using a Clevenger-type apparatus for four hours. The antimicrobial activity of the essential oils of S. rupestris and S. amanica were tested in vitro by using the paper disc diffusion method. In this study, two gram-negative standard test bacteria, six gram-positive standard test bacteria, ninemulti-resistant bacteria,and yeastwere used.The results obtained in the evaluation of the antimicrobial activity of the essential oils are shown in [Table 1]. | Table 1: Antimicrobial activity of the essential oils of S. rupestris and S. amanica
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The essential oils of S. rupestris and S. amanica showed greater activity against the gram-positive than gram-negative bacteria. The essential oils of S. rupestris inhibited all the gram-positive bacteria, except Staphylococcus epidermidis MU 30. The essential oils of S. amanica were active against all the gram-positive bacteria, except S. epidermidis MU 30 and Staphylococcus aureus MU 38. However, in the gram-negative bacteria, the two essential oils inhibited only the growth of Cryseomonasluteola MU 65 and Stenotrophomonasmaltophilia MU 64. The essential oils were not effective against Candida albicans.
This study documents the in vitro antimicrobial activity of S. rupestris and S. amanica for the first time. The essential oils are shown to be effective against gram-positive bacteria, including multidrugresistant strains. These plants need to be studied on a larger scale to elucidate their mechanism of action and may be usefulas an alternative antimicrobial agent for multidrug resistant bacteria in the future.
| » References | |  |
| 1. | Serbetçi T, Demirci B, Güzel CB, Kültür S, Ergüven M, Baser KH. Essential oil composition, antimicrobial and cytotoxic activities of two endemic Stachys cretica subspecies (Lamiaceae) from Turkey. Nat Prod Commun 2010;5:1369-74. 
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| 2. | Koutsaviti A, Milenkoviæ M, Tzakou O. Antimicrobial activity of the essential oil of Greek endemic Stachys spruneri and its main component, isoabienol. Nat Prod Commun 2011;6:277-80.
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| 3. | Davis PH, Edmondson JR, Mill RR, Tan K. Flora of Turkey and East Aegean Islands. Vol. 7. Edinburg: Edinburg University Press; 1988.
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| 4. | Skaltsa HD, Lazari DM, Chinou IB, Loukis AE. Composition and antibacterial activity of the essential oils of Stachys candida and S. chrysantha from southern Greece. Planta Med 1999;65:255-6.
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[Table 1]
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