Available online at www.worldscientificnews.com WSN 49(2) (2016) 381-404 EISSN 2392-2192 Gas chromatography mass spectrum and Fourier transform - infrared spectroscopy analysis of methanolic extract of Cressa cretica L. leaves Aseel Muhammed Omran, Nidaa Adnan Abu-seraj, Ibtihal Muiz Al Husaini Department of Biology, Babylon University, Hilla, Iraq E-mail address: [email protected]ABSTRACT Aims of this study were to investigation the presence of phytochemical compounds in the methanolic extract of Cressa cretica L. leaves by using GC-MS method and report the functional groups by using FT-IR spectroscopy. The identification of phytochemical compounds based on the peak area, retention time, molecular weight, molecular formula, MS fragment ions. Thirty four phytochemical compounds were identification in the methanolic extract of Cressa cretica leaves. The GC-MS analysis provide the existence of 5-Methyl-6-phenyltetrahydro-1,3-oxazine-2-thione, Lactose, 3-Deoxy-L-ribose-2,5-dibenzoate, Sarreroside, Pterin-6-carboxylic acid, Octadecadiynoic acid, methyl ester, d-Mannose, Dodecanoic acid, 3-hydroxy-, Geranyl isovalerate, Tetradecanoic acid , 6-epi- shyobunol, Paromomycin, Cis-9-Hexadecenoic acid, and others. The FT-IR analysis revealed the presence of Alkenes, aliphatic amines, nitro compounds, alkanes. These are chemical compounds are may be useful for various herbal formulation as antifungal, antibacterial, anti- inflammatory, anti- oxidant and others. Keywords: FT-IR; GC-MS analysis; Leaves; Methanol; Cressa cretica
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Available online at www.worldscientificnews.com
WSN 49(2) (2016) 381-404 EISSN 2392-2192
Gas chromatography mass spectrum and Fourier
transform - infrared spectroscopy analysis of methanolic extract of Cressa cretica L. leaves
Aseel Muhammed Omran, Nidaa Adnan Abu-seraj, Ibtihal Muiz Al Husaini
Department of Biology, Babylon University, Hilla, Iraq
Herbal medicines had usually used for treatment of diseases and for helth mentinance
[1], plant based drugs have been used since immemorial time, which interesting with herbal
products lead to grouth of medicinal plant industries [2]. Cressa cretica L. (convolvulaceae) is
a small, dwarf shrub [3], roots are horizontal, geminate with lateral branches leading upward
to produce above- ground parts. The leaf blade is 1-2 mm long, lanculate, ovate or elliptic to
scale like. Flowers are solitary, white or pink axillary, 5-8 mm long [4]. Seeds are 3-4 mm
long, glabrous, smooth and shining to reticulate, with dark, brown color [5]. Cressa cretica showed variation in productivity in response to environmental factors.
Net productivity and aboveground biomass were higher during the brief winter in comparison
to summer [6]. C. cretica used in all parts as a paste and decoction to treated fungus infection,
asthma, blood purifier and eczema [7]. Aqueous and alcoholic extracts of leaves of this plant
have a very good activity against some microbial pathogens such as gram – positive, gram
negative bacteria and some fungi species, such as Candida albicans, Aspergillus niger, and
Penicillium chrysogenum [8]. The plant can be used as anti-tubercular, expectorant [9].
Ethanolic extract of C. cretica significantly reduced blood glucose, serum cholesterol in rats
[4]. This plant also used to synthesis silver nanoparticles from silver nitrate using C. cretica
leaf extract [10].
In the last few years gas chromatography – mass spectrometry has become firmly
established as a key technology plat form for phytochemical profiling in plant [11-13]. Gas
chromatography provides a very adequate technique for the separation of complex samples
because this technique give a combination of speed, sensitivity and a high resolving power
[14]. Fourier transform infrared spectrometry is a physico-chemical analytical technique and
one of the most widely used methods to identify the structure of unknown composition or its
functional group, and the intensity of the absorption spectra associated with molecular
composition or content of the chemical group [15]. The present study involves an assessment
using GC-MS and FT-IR spectroscopic techniques to investigate and determine the bioactive
compounds in the leaves of C. cretica.
2. MATERIALS AND METHODS
Collection and preparation of plant material
The leaves were purchased from the gardens of Babylone University, Hilla city, after
had cleaned and removal foreign materials, the leaves were washed twice with running tap
water and once with distilled water and dried under shade for ten days at room temperature.
Dried leaves stored in airtight container to avoid the effect of humidity and then stored at
room temperature until further use.
Preparation of sample about 20 gm of the plant sample powdered were soaked in 100 ml
methanol for 16 h in a rotatory shaker. What man No.1 filter paper was used to separate the
extract of plant. The supernatant were used for further phytochemical analysis [16]. It was
again filtered through sodium sulphate in order to remove the traces of moisture.
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Gas chromatography mass spectrum analysis
The GC-MS analysis of the plant extract was made in a (QP 2010 Plus SHIMADZU)
instrument under computer control at 70 eV [17-19]. About 1 μl of the methanol extract was
injected into the GC-MS using a micro syringe , then the scanning was done for 45 min. As
the compounds were separated, and removed from the column and entered a detector which
was capable of creating an electronic signal whenever a compound was detected. The greater
concentration in the sample, bigger was the signal obtained which then processed by the
computer.
The time from when the injection was made (Initial time) to when elution occurred is
referred to as the Retention time (RT). While the instrument was run, the computer generated
a graph from the signal called chromatogram. Each of the peaks in the chromatogram
represented the signal created when a compound eluted from the Gas chromatography column
into the detector. The x-axis showed the RT and the y-axis measured the intensity of the
signal to quantify the component in the sample injected. As individual compounds removed
from the Gas chromatographic column, they entered the electron ionization (mass
spectroscopy) detector, where they were bombarded with a stream of electrons causing them
to break apart into fragments.
The fragments obtained were actually charged ions with a certain mass. The M/Z
(Mass/Charge) ratio obtained was calibrated from the graph obtained, which was called the
Mass spectrum graph which is the fingerprint of a molecule. Before analyzing the extract
using gas chromatography and mass spectroscopy , the temperature of the oven and the flow
rate of the gas used and electron gun were programmed initially. The temperature of the oven
was maintained at 100 °C. Helium gas was used as a carrier as well as an eluent. The flow
rate of helium was set to 1ml per minute. The electron gun of mass detector liberated
electrons having energy of about 70eV. The column employed here for the separation
siloxane). The identity of the components in the extracts was assigned by the comparison of
their retention indices and mass spectra fragmentation patterns with those stored on the
computer library and also with published literatures [19,20].
-2-thione in the leaf extract of C. cretica L. ester in the leaf extract of C. cretica L.
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Figure 3. Lactose in the leaf extract Figure 4. 3-Deoxy-L-ribose-2,5-dibenzoate in
of C. cretica L. the leaf extract of C. cretica L.
Figure 5. Adenosine , 4'-methylaminoformy Figure 6. Benzenemethanol,4-hydroxy-α- l-4'-deshydroxymethyl-N-[3-is in the leaf -[1-(methylamino)ethyl]-,(R* in the leaf
extract of C. cretica L. extract of Cressa cretica L
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Figure 7. Benzenemethanol , 2-(2-aminopropoxy) Figure 8. Sarreroside in the leaf 3-methyl- in the leaf extract of Cressa cretica L. extract of Cressa cretica L.
Figure 9. Pterin-6-carboxylic acid in Figure 10. 12,15-Octadecadiynoic acid, methyl
the leaf extract of C. cretica L. ester in the leaf extract of C. cretica L.
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Figure 11. d-Mannose in the leaf extract Figure 12. Dodecanoic acid , 3-hydroxy
of C. cretica L. in the leaf extract of C.a cretic
Figure 13. Cyclopenta[1,3]cyclopropa[1,2 Figure 14. Desulphosinigrin in the
cyclohepten-3(3Ah)-one,1,2 in the leaf leaf extract of C. cretica L.