• Do extraction and pretreatment conditions affect the quality of rice bran oil?
  • This study investigated the effect of extraction and pretreatment conditions on the quality of rice bran oil extracted with CO 2 -expanded hexane. The extraction conditions considered were temperature (20¨C30 ¡ãC), CO 2 mole fraction (0.76¨C0.94), and pressure (4.2¨C7.0 MPa).
  • What is rice bran used for?
  • This by-product represents around 9% of all milled rice, and it is full of nutritional and bioactive compounds, but despite these positive proprieties, it is usually wasted or used for animal feeds. Rice bran is particularly rich in oil, which is generally extracted by means of mechanical pressing or organic solvent extraction.
  • What are the optimum extraction conditions for phosphorus-free rice bran oil?
  • The optimum extraction conditions for phosphorus-free rice bran oil (phosphorus concentrations of 9.8, 9.1, and 6.2 ppm) were CO 2 mole fraction of 0.82 at 5.1 MPa and 20 ¡ãC, CO 2 mole fraction of 0.87 at 5.0 MPa and 25 ¡ãC, and CO 2 mole fraction of 0.92 at 5.1 MPa and 30 ¡ãC, respectively.
  • What are the extraction conditions for rice bran?
  • The extraction conditions considered were temperature (20¨C30 ¡ãC), CO 2 mole fraction (0.76¨C0.94), and pressure (4.2¨C7.0 MPa). The effectiveness of rice bran hot air drying at 80¨C100 ¡ãC for 0.5, 1, 3, and 5 h for lipase inactivation was also studied.
  • Can -oryzanol be extracted from rice bran oil?
  • All the here reported green extraction techniques allow a high-quality rice bran oil and high concentrations of ¦Ã-oryzanol to be obtained and show comparable yields with the extraction methods that employ hexane.
  • Does temperature and pressure affect the quality of rice bran oil?
  • A consistent rice bran oil quality with?<?10 ppm phosphorus (EN 14,214) has been achieved by extraction in the vapor¨Cliquid phase region of 0.88¨C0.94 CO 2 mole fraction at 5.1 MPa and 25 ¡ãC [ 8 ]. However, few studies have investigated the influence of temperature and pressure on both the extraction process and the quality of rice bran oil.