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9 1. 3. 2009.

The Essential Oil of Thymus Aureopunctatus (Beck) K. Malý

Essential oil of Thymus aureopunctatus (Beck) K. Malý, obtained by hydrodistillation and headspace technique, was subjected to capillary GC-MS analysis, and its volatile composition was compared with essential oil profile of Thymus serpyllum L. and a botanically undetermined thyme species, Thymus spp., all growing wild in the same habitat in Bosnia and Herzegovina. This paper presents the first report on phytochemical analysis of the rare T. aureopunctatus species, and also the first report on headspace analysis of plants belonging to the genus Thymus. One hundred and two volatile constituents were identified. The investigated Thymus species of Bosnian origin clearly belong to the thymol-chemotype with relatively abundant level of this main constituent varying from 30.5% for T. serpyllum, and 34.5% for T. aureopunctatus, to 44.2% for Thymus spp., while their corresponding headspace samples contain very high percentage of p-cymene, thymol biosynthesis precursor, in the range from 29.1% to 68.1%.


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