Tehran University of Medical Sciences
Comparison of the volatile composition of Stachys persica Gmel. and Stachys byzantina C. Koch. oils obtained by hydrodistillation and steam distillation.
Authors: Khanavi M , Hadjiakhoondi A , Amin G , Amanzadeh Y , Rustaiyan A , Shafiee A ,
Zeitschrift fur Naturforschung. C, Journal of biosciences , Vol., No. 0939-5075 (Print) , 20050407 ,Page:0
The oils obtained by hydrodistillation and steam distillation of the aerial parts of Stachys persica Gmel. and Stachys byzantina C. Koch grown in Iran were analyzed by GC/MS. The essential oil obtained by hydrodistillation of the aerial parts of S. persica was characterized by a high amount of non-terpenoid components of which methyllinoleate (27.7%), hexadecanoic acid (9.8%) and 6,10,14-trimethyl-2-pentadecanone (9.2%) were the major constituents, whereas the steam distilled oil of the plant contained hexadecanoic acid (27.2%), carvacrol (9.4%) and eugenol (5.2%). Both hydrodistilled and steam distilled essential oils of the aerial parts of S. byzantina were rich in sesquiterpenes such as a-copaene (16.6% and 10.4%), spathulenol (16.1% and 18.5%) and beta-caryophyllene (14.3% and 13.5%), respectively.