Physico-Chemical Properties and Elements Composition of Fixed oil, Seed Extract, of Jatropha curcus L. [Blue Nile State (Aldamazien)]

Christina Yacoub Ishak, Elfatih A. Hassan, Mohamed Ezeldin and Mona Alnaeem
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Christina Yacoub Ishak: Department of Chemistry, Faculty of Science, University of Khartoum, Khartoum, Sudan
Elfatih A. Hassan: Department of Chemistry, Faculty of Science, Sudan University of Science and Technology, Khartoum, Sudan
Mohamed Ezeldin: Department of Chemistry, Faculty of Science, Sudan University of Science and Technology, Khartoum, Sudan ; Department of Chemistry, Faculty of Science and Technology, Omdurman Islamic University, Khartoum, Sudan
Mona Alnaeem: Department of Chemistry, Faculty of Science, University of Khartoum, Khartoum, Sudan

Academic Journal of Chemistry, 2017, vol. 2, issue 8, 84-89

Abstract: Jatropha curcus L seed oil has been extracted by mechanical pressing, physicochemical parameters of the extracted oil such as moisture content, ash content, density, refractive index, kinematic viscosity, saponification value, Iodine value, peroxide value and acid value have been carried out on the seed oil using American Oil Chemist Society [1] and Association of Official Analytical Chemists [3] standard methods. The organic compounds of Jatropha curcus L oil have been evaluated by gas chromatography mass spectrometry technique (GC/MS), elements composition of extracted oil has been determined using inductively coupled plasma technique (ICP). The extracted oil is non-edible because all physicochemical characteristics have been found to be out of permissible limits assigned by World Health Organization [4] for edible oils.  A total of 34 organic compounds of Jatropha curcus L seed oil have been detected, besides there have been some new compounds that have not been previously reported. The elements composition concentrations that have been found in extracted oil are Na, Mg, Ca, V, Fe, Ni, Cu, Al, As and Pb, these comply with  WHO specification except the concentrations of Mg, Ni and As have been found to be 21.5, 0.1 and 2.872 ppm respectively.

Keywords: Jatropha curcus L; Mechanical pressing; GC/MS; ICP; Physicochemical properties of mechanical pressing. (search for similar items in EconPapers)
Date: 2017
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