Felycia Edi Soetaredjo, Suryadi Ismadji, Maria Yuliana Liauw, Artik Elisa Angkawijaya, Yi-Hsu Ju
Solubility of (+)-catechin in SC-CO2 was measured at several temperatures (313.15, 323.15, 333.15 and 343.15K) and pressure in the range of 12-26MPa using ethanol as the co-solvent (5mol.%). The experimental data were used for the correlation of density dependent solute solubility parameters. The equations of Chrastil, del Valle and Aguilera, Adachi and Lu, González, and Méndez-Santiago and Tejawere fitted very well for the solubility of (+)-catechin. The rate of mass loss of (+)-catechin showed that its sublimation pressure is very low, an indication of the stability of the compound. Thermogravimetric analysis was used to determine the sublimation pressure. © 2013 Elsevier B.V.
Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 43 Sec 4 Keelung Road, Taiwan; Department of Chemical Engineering, Widya Mandala Surabaya Catholic University, Surabaya 60114, Kalijudan 37, Indonesia