Journal of the American Oil Chemists’ Society

, Volume 73, Issue 12, pp 1653–1656 | Cite as

Comparison of isopropanol and hexane for extraction of vitamin E and oryzanols from stabilized rice bran

  • Weicheng Hu
  • John Henry Wells
  • Tai-Sun Shin
  • J. Samuel Godber


The effects of solvent-to-bran ratio (2∶1 and 3∶1, w/w), extraction temperature (40 and 60°C), and time (5, 10, 15, 20, and 30 min) were studied for hexane and isopropanol extraction. Increasing the solvent-to-bran ratios and extraction temperature increased the amounts of crude oil, vitamin E and oryzanol recovered for both solvents. An extraction time of 15 min was sufficient for optimum crude oil, vitamin E, and oryzanol extraction. Preheated isopropanol (3∶1 solvent/bran ratio and 60°C) extracted less crude oil (P<.05) but more vitamin E (P<.05) and similar amounts of oryzanol (P>.05) relative to preheated hexane. The data suggest that isopropanol is a promising alternative solvent to hexane for extraction of oil from stabilized rice bran.

Key Words

Extraction hexane isopropanol oryzanol rice bran oil vitamin E 


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Copyright information

© AOCS Press 1996

Authors and Affiliations

  • Weicheng Hu
    • 1
  • John Henry Wells
    • 1
  • Tai-Sun Shin
    • 2
  • J. Samuel Godber
    • 2
  1. 1.Department of Biological and Agricultural EngineeringLouisiana State University Agricultural CenterBaton Rouge
  2. 2.Department of Food Science, Louisiana Agricultural Experiment StationLouisiana State University Agricultural CenterBaton Rouge

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