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Register a new userChemical composition and antimicrobial properties of essential oils extracted from citrus fruit peels
دراسة التركيب الكيميائي و التضاد البكتيري للزيوت العطرية المستخلصة من قشور ثمار الحمضيات
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اِستُخلصت الزيوت العطرية بطريقة الجرف ببخار الماء من قشور ثمار ستة أنواع من الحمضيات هي الليمون الحامض و البرتقال و الكريفون و البوملي و اليوسفي و النارنج. دلَّت النتائج على أن الزيت العطري المستخلص من قشور الليمون الحامض أكثـر فعاليـة كمـضاد للبكتريا من بقية الزيوت الأخرى، كما وجد أيضاً أن البكتريا موجبة غرام هي عموماً الأكثر حساسية لهذه الزيوت العطرية مقارنة بالبكتريا سالبة غرام، في حين وجد أن النـوع aeruginosa. P هـو الأكثـر حساسية عموماً بين البكتريا سالبة غرام.
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-distillation (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.
References used
Agatemor, C., 2009. Antimicrobial activity of aqueous and ethanol extracts of nine Nigerian spices against four food borne bacteria. Internet Journal of Food Safety, V.10, pp.77-80
Celikel, N. and Kavas, G., 2008. Antimicrobial properties of some essential oils against some pathogenic microorganisms. Czech J.Food Sci.,V.26, pp.174-181
Espina, L., Somolinos, M., Lorán, S., Conchello, P. and García, P., 2011. Chemical composition of commercial citrus fruit essential oils and evaluation of their antimicrobial activity acting alone or in combined processes. Food Control, V. 22, pp. 896-902
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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%).
Terebinth trees have been occupying a good part of the mount of Syrian
(abed elaziz, pelass). The Pistacia atlantica fruit, rich in oil, is used by local
inhabitants in many ways, few studies investigation of the P. atlantica fruit oil
of Syria ha
s been carried out,This study investigates the protein, ash, crude oil
and oil composition of P. atlantica with respect to total phenol, iodine value and
saponification value, in order to classify it among the other known edible oils
thenafter compare the oil composition with the oils of other Pistacia species.
The fruit of P.atlantica appears to be rich in oil. The major fatty acid in the
sample studied are oleic, linoleic, our results show that. The oil has a higher
content of unsaturated FA (oleic + linoleic = 72%). The oil can be classified as
an oleo-linoleic vegetable oil. The biochemical data showed an elevated MUFA
content (50-48%) which may constitute an important property against certain
pathologies for its nutritional and preventive virtues.
Chemical composition of the essential oil extracted by hydrodistillation (Clevenger
apparatus) from some aerial parts (ripe and unripe fruit) of Pistacia Atlantica
(Anacardiaceae) which are widely spread throughout the countries of the Mediterranea
n
Sea and have been occupying a good part of the mount of Syria was determined by Gas
Chromatography-Mass Spectrometer GC/MS.
The results of analyzing showed that the oil consist of five compounds in ripe and
unripe fruit, and it was found that the component with the highest ratio in both samples is
the same 2-methylbutanal and its ratio 95.713% in the ripe fruit and 94.138% in the unripe
fruit.
The results of this study also show that the essential oil components of the Syrian
Pistacia fruits are completely different from those in different environments due to the
different types of pistacia species which have been studied and the different environmental
conditions in which this plant grows.
Chemical composition of the essential oil of the aerial parts of Artemisia
vulgaris L. (Asteracea), grown in Syria was determined by GC/MS. The oil
obtained by hydrodistillation, was found to contain 55 components, accounting
for 98.82 %.
In this research, the total content of phenols and flavonoids was determined from the peels of some Syrian citrus fruits and the total antioxidant activity of them was studied, and the effect of changing the extraction method on this activity and content was studied.
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