Solubility of the natural antioxidant gallic acid in supercritical CO + ethanol as a cosolvent
Journal of Chemical and Engineering Data, ISSN: 0021-9568, Vol: 52, Issue: 1, Page: 116-121
2007
- 54Citations
- 51Captures
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Article Description
Solubility data of solid 3,4,5-trihydroxybenzoic acid (gallic acid) in supercritical CO + ethanol as a cosolvent are reported in this work. Measurements were carried out in the temperature range (313.15 to 333.15) K, pressures ranging from (10 to 40) MPa, and different ethanol modifier content ranging from (0.7 to 6) %. The experimental data were correlated using the Soave-Redlich-Kwong equation of state and the group contribution associating equation of state. The thermodynamic modeling analysis includes also the solubility representation of an important class of natural antioxidants (e.g., gallic acid esters) in supercritical CO. © 2007 American Chemical Society.
Bibliographic Details
American Chemical Society (ACS)
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