Supercritical carbon dioxide extraction of cuphea seed oil

▶ Cuphea seed oil is effectively extracted with CO2 at 50 °C and 20.7 MPa. ▶ CO2 derived cuphea seed oil has both low free fatty acid content and acid value. ▶ CO2 derived cuphea seed oil is lighter in color than petroleum ether derived oil. ▶ The fatty acid profiles of the CO2 and pet ether derived oils are nearly identical.