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7731779 
Journal Article 
Extraction of rice bran oil using aqueous media 
Hanmoungjai, P; Pyle, L; Niranjan, K 
2000 
1 
Journal of Chemical Technology and Biotechnology
ISSN: 0142-0356 
75 
5 
348-352 
English 
WOS:000086744000002 
Aqueous extraction of oil from rice bran was studied on a laboratory scale and the resulting product was examined. The following process parameters influencing oil extraction were individually investigated: pH of aqueous media, extraction temperature, extraction time, agitation speed and rice bran-to-water ratio. Extraction temperature and pH were found to be the main factors influencing oil extraction. The highest oil yield was obtained at pH 12.0, extraction temperature 50°C, extraction time 30 min, agitation speed 1000rpm, and rice bran-to-water ratio 1.5-to-10. The quality of aqueous-extracted oil in terms of free fatty acid, iodine value and saponification value was similar to a commercial sample of rice bran oil and hexane-extracted oil, but the peroxide value was higher. Furthermore, the colour of aqueous-extracted oil was paler than solvent-extracted oil. 2000 Society of Chemical Industry. 
aqueous extraction; rice bran; rice bran oil