Simultaneous recovery of wax and oil from rice bran by filtration-extraction
Hard rice waxes of high melting points have been obtained directly from rice bran while simultaneously producing oil. These waxes were produced by the following two methods. 1. selective cold hexane-extraction of cooked rice bran to remove the oil, hot hexane-extraction to remove the wax, chilling of the hot miscella and separation of the precipitated wax by centrifugation; 2. single hot hexane-extraction of raw or cooked rice bran, hot water washing and chilling of the miscella, separation of the wax precipitate by settling or centrifugation, and multiple cold hexane-washings of the wax. Wax can also be processed from rice oil settlings by the latter method after a miscella has been prepared. The cold extraction-hot extraction method should be preferable as a process when conducted on a single continuous filtration-extraction unit without reslurrying. Indications are that oil refining losses may be decreased by this method. Yields of rice wax varied from 0.22 to 0.31% of the original rice bran, or 1.29 to 1.82% of the extracted oil.
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- 1.Anon, Chemistry & Industry,58, 1014 (1939).Google Scholar
- 2.Cousins, E. R., Fore, S. P., Janssen, H. J., and Feuge, R. O., J. Am. Oil Chem Soc.,30, 9–14 (1953).Google Scholar
- 3.Eaves, P. H., (unpublished data at Southern Regional Research Laboratory).Google Scholar
- 4.Graci, A. V. Jr., Reuther, C. G. Jr., Eaves, P. H., Molaison, L. J., and Spadaro, J. J., J. Am. Oil Chemists’ Soc.30, 139–143 (1953).Google Scholar
- 5.Graci, A. V. Jr., Vix, H. L. E., Spadaro, J. J., D’Aquin, E. L., and Paredes, M. L., “A Bench Scale Method for Evaluating the Processing Characteristics of Oilseeds for Filtration-Extraction” (manuscript in preparation).Google Scholar
- 6.Kawai, J., and Ukija, H., J. Chem. Soc., Japan, Ind. Chem. Sect.,54, 735–7 (1951), through Chem. Abs.47, 9034.Google Scholar
- 7.Kitsuta, Kisaku, Patent Japan 5339 (1951) Sept. 15; through Chem. Abs.47, 3013.Google Scholar
- 8.Markley, K. S., Rice Journal,52 (10), 14, 30–35 (1949).Google Scholar
- 9.Pominski, C. H., Loeb, J. R., and Dollear, F. G., “Laboratory Refining Procedure for Crude Rice Bran Oil,” manuscript in preparation.Google Scholar
- 10.Reddi, P. B. V., Murti, K. S., and Feuge, R. O., J. Am. Oil Chemists’ Soc.,25, 206–211 (1948).Google Scholar
- 11.Sayre, J. E., and Marsel, C. J., Chem. Week,71 (13), 29–50 (1952).Google Scholar
- 12.Spadaro, J. J., Graci, A. V. Jr., Gardner, H. K., Parker, J. S., Laborde, E. J., and Gastrock, E. A., Oil Mill Gas.,56 (1), 77–81 (1951).Google Scholar
- 13.Tsuchiya, T., J. Nippon Oil Technol. Soc.1, No. 1, 1–6 (1948); through Chem. Abs.43, 5611.Google Scholar