The quality and quantity of essential oil composition in full blooming of six Thymus species
Subject Areas : Medicinal Plants
Zahra
Karimi
1
(1M.Sc Graduate in Plant Breeding, University of Shahrekord, Iran)
Sahdula
Hoshmand
2
(2Professor, Department of Plant Breeding and Biotechnology, University of Shahrekord, Iran)
Abdlraman
Mohamad khani
3
(3Associate Professor, Department of Horticulture, University of Shahrekord, Iran)
Keywords: carvacrol, Essential oils, thymol, Thymus spp,
Abstract :
Thymus L. is an aromatic plant are belonging to the Lamiaceae family based on the synthesis of secondary metabolites widely used for medicinal purposes thymol and carvacrol. The current study aimed at evaluating the quantity and quality of essential oil composition in six species of Thymus: T. daenensis, T. kotschyanus, T. migricus, T. vulgaris, T. transcaucasicusand T. trautvetterii. The experiment was done in a randomized complete block design with three duplications in 2016 in Shahrekord University. Flowering branches in 100% flowering stage within a distance of five centimeters soil surface and water distillation (Clevenger apparatus), were analyzed by GC/MS (p< 0.05). treatments on weight and essential volume indicated. T. vulgaris was the highest volume (0.28 ml) and weight of essence (0.27 gr). The comparisons were showed that the T. trautvetterii has the highest yields (1.1 precent) and highest volume percent of oil in T.migricus and was equivalent to 1.02 ml/gr. ρ-cymene (19.46%) and γ-terpinene (14.17%) were the abundant components of T. vulgaris, thymol (60.4 %) was the highest in T. daenensis, carvacrol (6.95%) in T. kotschyanus and geraniol (41.38%) was the most in T. trautvetterii. The highest output combined was observed in T. kotschyanus (98.52%).
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