The mass spectra of 5 trisubstituted aromatic compounds were studied. The
spectra were recorded by local GC-MS at 70 eV and compared with
bibliographic spectra. The spectra of each compound were different. The using
of local GC-MS for identificati
on required recording the spectra references at
the same conditions.
The thyme is a wild plant naturally present in the Syrian Seaside at varying altitudes
up to more than 1000 m above sea level. The essential oil was extracted from thyme plants
taken from seven sites (Safita - Beit Sheikh Younis, Khirbet Al-Mezah –
Albirdanie,
Sheikh Badr – Aljalsat, Banias – Shibani, Qadmous – Alhatria, Qardahah - Deir Hanna,
Albhloulih - Beit Alia) by distilling 200 g of dry leaves from each site to obtain the
essential oil.
Essential oils from peels of 6 citrus species were extracted. The species were
lemon (Citrus limon), orange (C. sinensis), grapefruit (C. paradisi), pomelo
(C. maxima), mandarin (C. reticulata) and bitter lemon (C. aurantium) using
hydro-distillat
ion (Clevenger type).
In general Gram-positive bacteria were more sensitive to the oil
extracts tested than Gram-negative bacteria, and P. aeruginosa was the most
sensitive within the Gram-negative group.
Due to the economical and medical importance of the Capparisspinosa plant and the
wide distribution of this plant in the Syria environment, it was thought that a study of the
composition of Essential Oil extracted from this plant.
The Capparisspin
osa Essential Oil was extracted and purified components wher
studied by GC-Mass spectrometry.
The Oil was obtained by steam distillation (Clevegerexractor) and by solvent n-
Hexane. Components have been found which was about (98.9 %) from the total of
essential oil.
The major components were determined by steam distillation which were the
following:Palmitic acid (21.12%), Hexatriacontane (15.87%), n-Heneicosane (10.96%),
Pentatriacontane (9.92%), Hexahydrofarnesyl acetone (8.51%).
The major components were determined by solvent Hexane: Isobornyl acrylate
(66.89%), 2-Azido-2,3,3-trimethylbutane (6.09%), Ethanolamine (5.41%).
The extracted oil from Gundelia Tournefortii seeds, which belongs to Asteraceae
family and which is known as one of the medical herbal plants that is widely spread in the
Syrian environment, was isolated using soxhlet continuous extraction. It's ch
emical
composition was determined by GC/MS (Gas Chromatography – Mass Spectrometry). The
analysis led to identification of 20 components. The extracted oil was characterized by
high content of Linoleic Acid (52.9%), Palmitic Acid (20.1%) and Squalene (10.1%).
Flowers of Inula viscosa (L.) plant (Inula genus , Asteraceae family), locally known
as Taion, was collected from two different regions of Lattakia: the Jubt Barghal region (a
mountainous area), the Qaya region (a coastal area), and the essential o
il was extracted by
Hydrodistillation using the Cleveger apparatus , where the weight percentage of essential
oil stood at 1.26%,1.1% for both mountainous and coastal region ,respectively. The
Chemical composition of essential oil obtained from flowers of Inula viscosa (L.) was
analyzed by GC/MS .
The essential oil of the mountainous area contained 60 components, 58 components
of which were identified, that accounting for (97.98%) of total essential oil. The main
component controlling was:
7-methoxy-5-ethoxy-2,2-dimethyl-2H-chromene (43.43%)
The essential oil of the coastal region contained 33 components, 32 components of
which were identified, that accounting for (98.31%) of total essential oil. The main
components were:
Linalyl propionate (19.70%), Eugenol (15.11%), n-Eicosane (9.27%).
Due to the economical and medical importance of the Melilotus plant and the wide
distribution of this plant in the Syria environment, it was of necessity to study the the
composition of organic matter extracted from the leaves of this plant.
The M
elilotus Officinal organic matter was extracted and purified their where were studied
by GC-Maas spectrometry.
The organic matter was obtained by Soxhlet extractor and by solvent n-Hexane.
Components have been found which was about (99.91%) from the total of Essential Oil.
The major components were extracted by Soxhlet extractor and the following components
were determined : n-Docosane(39.82%) , Hydrocoumarin(15.39%) ,
Methyl 3-(2-hydroxyphenyl)propionate(14.29%).
The major components were determined by solvent n-Hexane:
1,2-Benzenedicarboxylic acid(17.77%) , 9,12,15-octadecatrienoic acid(12.85%)
The effects of the extracted aromatic oil from the leaves of Melilotus plant on some of
Pathogenic Microorganisms were studied.
