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Evidence-Based Complementary and Alternative Medicine
Volume 2013 (2013), Article ID 269161, 9 pages
http://dx.doi.org/10.1155/2013/269161
Research Article

In Vitro Antibacterial Activity of Essential Oils against Streptococcus pyogenes

1PRES LUNAM, Université d'Angers, Laboratoire de Bactériologie-Virologie, UFR Sciences Pharmaceutiques et Ingénierie de la Santé, 16 boulevard Daviers, 49045 Angers, Cedex 01, France
2PRES LUNAM, Université d'Angers, SFR ICAT 4208, EA 3142 GEIHP, 16 boulevard Daviers, 49045 Angers, Cedex 01, France
3S.A. PRANAROM International, 37 Avenue des Artisans, 7822 Ghislenghien, Belgium
4PRES LUNAM, Université d'Angers, SFR QUASAV 4207, EA 921 SONAS, UFR Sciences Pharmaceutiques et Ingénierie de la Santé, 16 boulevard Daviers, 49045 Angers, Cedex 01, France

Received 23 November 2012; Revised 7 March 2013; Accepted 15 March 2013

Academic Editor: Zhaoxiang Bian

Copyright © 2013 Julien Sfeir et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Streptococcus pyogenes plays an important role in the pathogenesis of tonsillitis. The present study was conducted to evaluate the in vitro antibacterial activities of 18 essential oils chemotypes from aromatic medicinal plants against S. pyogenes. Antibacterial activity of essential oils was investigated using disc diffusion method. Minimum Inhibitory Concentration of essential oils showing an important antibacterial activity was measured using broth dilution method. Out of 18 essential oils tested, 14 showed antibacterial activity against S. pyogenes. Among them Cinnamomum verum, Cymbopogon citratus, Thymus vulgaris CT thymol, Origanum compactum, and Satureja montana essential oils exhibited significant antibacterial activity. The in vitro results reported here suggest that, for patients suffering from bacterial throat infections, if aromatherapy is used, these essential oils, considered as potential antimicrobial agents, should be preferred.