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.
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.
Abu-Lafi
Saleh
S
Chemistry and Chemical Technology Department, P.O. Box 20002, Al-Quds University, Abu-Deis, Palestine.
Odeh
Imad
I
Dewik
Hasan
H
Qabajah
Mohammed
M
Imam
Amin
A
Dembitsky
Valery M
VM
Hanus
Lumir O
LO
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*
D000081007:Cymenes; D039821:Monoterpenes; D013943:Thymol; C073316:carvacrol