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Separation of saturated and unsaturated acids from rice bran oil
Author(s) -
ElZanati E. M.,
Khedr M. A.
Publication year - 1991
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02663763
Subject(s) - saponification , chemistry , solvent , crystallization , iodine value , hexane , rice bran oil , saponification value , bran , yield (engineering) , chromatography , organic chemistry , methanol , unsaturated fatty acid , materials science , fatty acid , raw material , metallurgy
Rice bran oil, a by‐product of rice milling, is an excellent source of a variety of fatty acids. Saponification yielded C 16 saturated and C 18 unsaturated acids. Saturated and unsaturated acids were separated by solvent crystallization. Hexane and methanol were both investigated as solvents. Gas‐liquid chromatography and iodine value showed that hexane was the more effective crystallization solvent at a solvent/oil ratio of three and crystallization temperature of 5°C. The percent yield and purity of 88.8% and 91% unsaturated acids, respectively, and of 65% and 59% saturated acids were obtained. A process description is proposed for an integrated process.