Boy Arief Fachri
Using Phase Equilibrium Theory to Calculate Solubility of γOryzanol in Supercritical CO2
567 - 570
2016
10
5
International Journal of Chemical and Molecular Engineering
https://publications.waset.org/pdf/10004367
https://publications.waset.org/vol/113
World Academy of Science, Engineering and Technology
Even its content is rich in antioxidants ϒoryzanol, rice bran is not used properly as functional food. This research aims to (1) extract ϒoryzanol; (2) determine the solubility of ϒoryzanol in supercritical CO2 based on phase equilibrium theory; and (3) study the effect of process variables on solubility. Extraction experiments were carried out for rice bran (5 g) at various extraction pressures, temperatures and reaction times. The flowrate of supercritical fluid through the extraction vessel was 25 gmin. The extracts were collected and analysed with highpressure liquid chromatography (HPLC). The conclusion based on the experiments are as (1) The highest experimental solubility was 0.303 mcgmL RBO at T 60°C, P 90 atm, t 30 min; (2) Solubility of ϒoryzanol was influenced by pressure and temperature. As the pressure and temperature increase, the solubility increases; (3) The solubility data of supercritical extraction can be successfully determined using phase equilibrium theory. Meanwhile, tocopherol was found and slightly investigated in this work.
Open Science Index 113, 2016