Investigation and comparison of the essential oil compositions of Thymus daenensis accessions cultivated in the lowland area: case study in Gorgan
In order to investigate the quality and quantity of essential oil of Thymus daenesis Celak., an experiment was conducted. The essential oil characteristics recognition is important to economical development in Thymus accessions. For This purpose, flowering shoots of eight accessions of T. daenesis were harvested at 50% of flowering stage. They cultivated under field condition at Agricultural and Natural Resources Research and Education Center of Golestan and Studied during 2011-2012. The samples were dried in shadow and grinded. Essential oil extraction was carried out by hydro distillation method for three hours. Chemical compounds were identified with GC and GC-MS. Results showed that essential oil yield was between 0.22%- 3.6% that the highest essential oil yield belongs to accession 60 (Markazi1). In this study, main chemotypes were consisting of linalool, thymol, carvacrol, p-cymene and 1, 8-cineole. According to results, the highest percentage of thymol (72%) and carvacrol (43%) were identified in accession 60 (Markazi1) and accession 49 (Isfahan2) respectively. Therefore, according to results of study could be recommended these accessions due to high content thymol and carvacrol.
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