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Abstract Title:

Antimicrobial and antioxidant activities and chemical characterization of essential oils of Thymusvulgaris, Rosmarinus officinalis, and Origanum majorana from northeastern México.

Abstract Source:

Pak J Pharm Sci. 2015 Jan ;28(1 Suppl):363-9. PMID: 25631514

Abstract Author(s):

Laura Guerra-Boone, Rocío Alvarez-Román, Rocío Alvarez-Román, Ricardo Salazar-Aranda, Anabel Torres-Cirio, Verónica Mayela Rivas-Galindo, Noemí Waksman de-Torres, Gloria González, Luis Alejandro Pérez-López

Article Affiliation:

Laura Guerra-Boone

Abstract:

There have been no reports of antifungal activity and composition of extracts from Thymus vulgaris, Rosmarinus officinalis or Origanum majorana from northeastern México. Antifungal activity of these oils against Trichophyton rubrum, Trichophyton tonsurans, Trichophyton mentagrophytes, Microsporum gypseum, Microsporum canis and Epidermophyton floccosum was measured by diffusion assay. Additionally, antibacterial and antioxidant activities were evaluated. Antibacterial activity against Staphylococcus aureus and Streptococcus pyogenes was examined by microdilution. Antioxidant activity was assessed by 2,2-difenil-1-picrilhidracil reduction test. The plant oils were characterized by both GC/MS and GC/FID. Oils of T. vulgaris and O. majorana showed growth inhibition activity against dermatophytes, especially T. vulgaris oil, which completely inhibited growth of all tested dermatophytes. The oils also showed bioactivity against bacteria, with minimum inhibitory concentration (MIC) values between 62.5 and 500 μg/mL. The antioxidant activity of the oilswas low, with effective concentration (EC50) values<250μg/mL. The major components in the oils were as follows: T. vulgaris, o-cymene, μ-terpinene, thymol and carvacrol; R. officinalis, terpinen-4-ol and 1,8-cineole; O. majorana, terpinen-4-ol and thymol.

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