Characterization of wheat bran oil obtained by supercritical carbon dioxide and hexane extraction

Supercritical carbon dioxide (SC-CO2) and soxhlet extraction using was carried out to extract oil from wheat bran oil. For SC-CO2, the pressure and temperature were ranging from 10 to 30 MPa and 313.15–333.15 K. The extraction was performed in a semi batch process with a CO2 flow rate of 26.81 g/min for 2 h. Wheat bran oil was characterized to investigate the quality. Acid value (AV) and peroxide value (POV) were higher in hexane extracted oil compared to SC-CO2 extracted oil. Induction period was measured by rancimat test. The oil obtained by SC-CO2 extraction had higher capability to delay the oxidation by surrounding environment. The DPPH radical scavenging activity was also measured. The SC-CO2 extracted oil showed higher radical scavenging activity compared to hexane extracted oil.