Journal of Supercritical Fluids, Vol.128, 159-165, 2017
Study of the supercritical extraction of Pterodon fruits (Fabaceae)
In this study, the extraction of sucupira fruits (Ptedoron spp.) was conducted by using the supercritical carbon dioxide as solvent and the mass percent yield, chemical profile and the antioxidant activity of the extracts obtained were evaluated. The extractions were conducted in 313-333 K and 10-22 MPa. Extractions conditions were defined by phase transition measurements for the system CO2 (1) + sucupira extract (2). The phase equilibrium data were modeled using the Peng-Robinson equation with Wong-Sandler quadratic mixing rule. Sovova model was applied to fit the kinetic extraction curves. The extractions were conducted in 313-333 K and 10-22 MPa. The highest mass percent yield (21.2%) and the highest content of vouacapan diterpenes (35.66%) were obtained from the supercritical extraction on the conditions of 313 K and 22 MPa. Yet, the highest antioxidant activity (77.59%) was obtained at 323 K and 16 MPa.
Keywords:Pterodon spp.;VLE data;Supercritical extraction;Mass transfer coefficients;Antioxidant activity;Mathematical modelling