Sub-critical Low Temperature Solvent Extraction Method
Comparison of the Active Ingredients within Rice Bran Oil by Hexane and Subcritical Solvents
Solvents for Rice Bran Oil | Vitamin E (mg/100g) | Oryzanol (%) | Sterol (mg/g) |
Hexane | 45.6 | 1.58 | 1.78 |
Butane | 75.6 | 1.78 | 2.08 |
Propane | 81.5 | 1.61 | 1.95 |
Above research data have clearly proven the advantages to extract rice bran oil by subcritical solvents than traditional hexane.
- The oryzanol contents by subcritical solvents is higher than that of hexane, up to 12.7%.
- The plant sterol contents by subcritical solvents is higher than that of hexane, up to 16.9%.
- The Vitamin E contents by subcritical solvents is higher than that of hexane, up to 65.8%.
- The color of crude rice bran oil by subcritical solvents is brighter than that of hexane, please check the right picture.
- The oil meal is free from high temperature, which perfectly protect the protein within it from damages. (You may also interested in Rice Bran Protein Extracting Machine
In conclusion, compared with traditional hexane solvent extraction method, the subcritical low temperature solvent extraction technology is more suitable for rice bran oil production. So, how about the rice bran oil extraction process by subcritical low temperature extraction method.