Journal of Chemical Thermodynamics, Vol.43, No.1, 34-38, 2011
Phase equilibrium data for the ternary system (propane plus chloroform plus oryzanol)
The compound oryzanol available in the rice bran (oriza sativa) is well known for its antioxidant activity Phase equilibrium data involving oryzanol in compressed fluids hardly found in the literature are important to provide the basis for the extraction and fractionation processes In this sense the aim of this work is to report phase equilibrium measurements for the system (gamma-oryzanol + chloroform) in compressed propane Phase equilibrium experiments were performed using the static synthetic method (cloud points transition data) in a high-pressure variable-volume view cell in the temperature range of 303 K to 353 K pressures up to 17 MPa for oryzanol overall mass fractions of 2 wt% 5 wt% and 10 wt% in (propane + chloroform) mixtures A complex phase behaviour comprising vapour-liquid liquid-liquid vapour-liquid-liquid solid-liquid solid-liquid-liquid solid-liquid-liquid-vapour transitions were visu ally observed for the system studied (C) 2010 Elsevier Ltd All rights reserved