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. 2018 Aug 28;23(9):2164. doi: 10.3390/molecules23092164

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© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Oregano EO exhibited the largest inhibition zone among the tested oils. Antibacterial activity of the screened EOs using agar disc diffusion method against (a) S. epidermidis with EOs at concentration of 0.7%; (b) S. epidermidis with EOs at concentration of 1.4%; (c) P. acnes with EOs at concentration of 0.7%; (d) P. acnes with EOs at concentration of 1.4%. Data is represented as means of inhibition zones (mm) ± SD. Controls used were clindamycin and erythromycin as positive control, while DMSO as negative control.