title: Natural compounds of Palestine flora. Comparison analysis by static headspace and steam distillation GC-MS of semivolatile secondary metabolites from leaves of cultivated Palestinian Majorana syriaca.
abstract: BACKGROUND
  A comparative analysis by using static headspace (HS) and steam distillation (SD) GC-MS of the volatile and the semi-volatile secondary metabolites from leaves of cultivated Majorana syriaca.
  
  
  METHODS
  The essential oils endogenous to cultivated thyme were isolated and identified by HS-GC-MS technology and compared to those from SD-GC-MS.
  
  
  RESULTS
  The HS-GC-MS results showed that the Palestinian cultivated thyme is rich in monoterpene hydrocarbons and phenolic monoterpenes such as alpha-phellandrene, alpha-pinene, beta-myrcene, m-cymene, p-cymene, gamma-terpinene, thymol and carvacrol. In all the samples gamma-terpinene, p-cymene, thymol and carvacrol were the most abundant compounds.
  
  
  CONCLUSIONS
  HS and SD-GC-MS have proved that most of the cultivated thyme samples examined has thymol isomer as the major phenolic constituent.
authors: Chemistry and Chemical Technology Department, P.O. Box 20002, Al-Quds University, Abu-Deis, Palestine.
authors: Saleh
authors: S
authors: Abu-Lafi
authors: Imad
authors: I
authors: Odeh
authors: Hasan
authors: H
authors: Dewik
authors: Mohammed
authors: M
authors: Qabajah
authors: Amin
authors: A
authors: Imam
authors: Valery M
authors: VM
authors: Dembitsky
authors: Lumir O
authors: LO
authors: Hanus
mesh_terms: D000081007:Cymenes; D008401:Gas Chromatography-Mass Spectrometry; D008877:Middle East; D039821:Monoterpenes / Q000032:analysis*; D031341:Origanum / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D013943:Thymol / Q000032:analysis*; D046930:Thymus Plant / Q000737:chemistry*
chemical_list: D000081007:Cymenes; D039821:Monoterpenes; D013943:Thymol; C073316:carvacrol