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IJSTR >> Volume 6 - Issue 11, November 2017 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Component, Fatty Acid And Mineral Composition Of Rice Bran Oil Extracted By Multistage With Hexane And Ethanol

[Full Text]



Fajriyati Mas’ud, Meta Mahendradatta, Amran Laga, Zainal Zainal



Edible oil, fatty acid, mineral, multistage extraction, solvent extraction



Rice bran oil (RBO) has been extracted from Celebes rice bran by multistage extraction with hexane solvent followed by ethanol to see the component, profile of fatty acids and mineral contained in both of them. As a comparison, RBO directly extracted with ethanol was also presented. Extraction process was performed using reflux method at 55oC, for 5 hours with bran and solvent ratio of 1:7. Analysis of components and fatty acids of RBO was conducted with GC-MS QP 2010 Shimadzu. Oleic, linoleic and palmitic were found dominant in first stage extraction by hexane with concentration of 3716.56, 1630.78 and 1021.89 mg/L, respectively. Palmitic (6.34 mg/L), lauric (4.78 mg/L), and linoleic (3.52 mg/L) were dominant in the second stage extraction by ethanol. Linoleic (28.85 mg/L), stearic (2.88 mg/L) and myristic (2.02 mg/L) were found in extracted directly by ethanol. RBO extracted with hexane had 18.6% of saturated fatty acid and 81.4% of unsaturated fatty acids, with ratio of saturated fatty acids : monounsaturated fatty acids: polyunsaturated fatty acids of approximately 1: 2.3 : 1.3. It contained about 56.7% of monounsaturated, 24.7% of polyunsaturated, and 18.6% of saturated fatty acids. In the present paper, we provide also an analysis of mineral composition of RBO by X-ray Spectrometer and melting point of RBO by Differential Scanning Calorimeter (DSC) instrument.



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