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Essential oils obtained from flowers, leaves and stems of Origanum vulgare L. ssp. viride (Boiss.) Hayek., growing wild in Ardabil Province (northwest Iran), were analyzed by GC and GC/MS. β-Caryophyllene was the major constituent in all three oils (48.1%, 50.1% and 60.2%, respectively). Of the 19 components detected in the flower oil, comprising 96.3% of the total, the major components were 1,8-cineole (11.6%), α-pinene (6.9%), and γ,-cadinene (4.8%). 1-Octen-3-ol (23.8%), and 1,8-cineole (8.5%) predominated in the leaf oil. In the stem oil, other main constituents were bicyclogermacrene (9.8%), 1,8-cineole (6.4%), borneol (5.1%), and pinocarvone (4.4%). The essential oils were evaluated for their antibacterial activity against 10 selected microorganisms. The data obtained contribute to the future use of certain essential oils as natural preservatives for food products, due to their safety and positive effect on shelf life.

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Antibacterial Activity and GC/MS Analysis of the Essential Oils from Flower, Leaf and Stem of <i>Origanum vulgare</i> ssp. <i>viride</i> Growing Wild in Northwest Iran

Antibacterial Activity and GC/MS Analysis of the Essential Oils from Flower, Leaf and Stem of Origanum vulgare ssp. viride Growing Wild in Northwest Iran