Analysis of essential oils from chemotypes of Thymus vulgaris in Catalonia

Essential oils from aerial parts of Thymus vulgaris have been obtained by hydrodistillation. Their components have been identified by gas chromatography/mass spectrometry. Samples were collected in Catalonia (northeastern Iberian peninsula), specifically in four locations along the Llobregat river b...

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Bibliographic Details
Published in:Journal of the science of food and agriculture 2007-09, Vol.87 (12), p.2327-2333
Main Authors: Torras, Josep, Grau, M. Dolors, López, Jordi F, de las Heras, F. Xavier C
Format: Article
Language:English
Subjects:
air temperature
altitude
Analytical chemistry
Aroma and flavouring agent industries
Biological and medical sciences
chemical composition
chemotypes
Chromatography
environmental factors
essential oils
Food industries
Fundamental and applied biological sciences. Psychology
gas chromatography
Mass spectrometry
Oils & fats
rain
River basins
thyme
Thymus vulgaris
Thymus vulgaris L
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Summary:Essential oils from aerial parts of Thymus vulgaris have been obtained by hydrodistillation. Their components have been identified by gas chromatography/mass spectrometry. Samples were collected in Catalonia (northeastern Iberian peninsula), specifically in four locations along the Llobregat river basin. Such locations have different altitudes with respect to sea level (1500 m; 700 m; 300 m; 100 m), and have differences in pluvial regime and mean temperature. At 700 m, samples were collected from a transplanted specimen from 1500 m, in order to check the influence of the change in environmental conditions. Two different chemotypes have been characterized. Samples collected at 300 m have a dominant chemotype 1,8-cineole, with 20% (approx.) essential oil content. The other samples have linalool as dominant chemotype with a 40-70% content, according to vegetative stage. Copyright © 2007 Society of Chemical Industry
ISSN:0022-5142
1097-0010
DOI:10.1002/jsfa.2995