Effect of chemical structure on the solubility of antioxidants in supercritical carbon dioxide: experimental data and correlation

In this work, the solubility of natural and synthetic antioxidants in supercritical carbon dioxide is determined by a dynamic method in the pressure range 130–250 bar at 308.1–333.1 K. The compounds considered are ascorbic acid, ascorbyl palmitate, gallic acid, propyl gallate, lauryl gallate, α-toco...

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Bibliographic Details
Published inThe Journal of supercritical fluids Vol. 14; no. 2; pp. 139 - 144
Main Authors Cortesi, A, Kikic, I, Alessi, P, Turtoi, G, Garnier, S
Format Journal Article
LanguageEnglish
Published Elsevier B.V 1999
Subjects
Antioxidant
Carbon dioxide
Solubility
Supercritical fluid
Supercritical fluid
Antioxidant
Carbon dioxide
Solubility
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Summary:In this work, the solubility of natural and synthetic antioxidants in supercritical carbon dioxide is determined by a dynamic method in the pressure range 130–250 bar at 308.1–333.1 K. The compounds considered are ascorbic acid, ascorbyl palmitate, gallic acid, propyl gallate, lauryl gallate, α-tocopherol acid succinate and butyl hydroxyl anisole. The experimental data are correlated using the Peng–Robinson equation of state, and the solute properties are estimated by group contribution methods.
ISSN:0896-8446
1872-8162
DOI:10.1016/S0896-8446(98)00119-3