The effect of distillation methods and stage of plant growth on the essential oil content and composition of Thymus kotschyanus Boiss. & Hohen
✍ Scribed by F. Sefidkon; M. Dabiri; A. Rahimi-Bidgoly
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 116 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0882-5734
No coin nor oath required. For personal study only.
✦ Synopsis
The essential oils were isolated by steam, hydro and water±steam distillation from the aerial parts of Thymus kotschyanus Boiss. & Hohen in three stages of plant growth (before, at the beginning of and at complete ¯owering). The oils were analysed by capillary GC and GC±MS. The highest oil yield was obtained by hydrodistillation method and the lowest by steam distillation. The oil yield, related to distillation method and stage of plant growth, was 0.28±1.80% w/w (the highest for complete ¯owering stage by hydrodistillation method). The main constituents in all of the oils were carvacrol (40.74±61.23%), thymol (7.51±26.92%), g-terpinene (3.72±8.25%), p-cymene (3.28±6.74%) and borneol (1.33±4.52%).