Solubility of β-Carotene and Glyceryl Trioleate Mixture in Supercritical CO2
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Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia
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Abstract
The phase behavior of the system β-carotene–glyceryl trioleate–CO2 has been investigated using a variable-volume high-pressure cell. The mass fraction of β-carotene in the initial mixture with glyceryl trioleate was 0.1. The gas rich phase was sampled in the pressure range from (25 to 60) MPa at temperatures of (313, 323, and 333) K. The solubilities in dense CO2 under the investigated conditions were in the range from (4.51·10–7 to 1.22·10–5) mol·mol–1 for β-carotene and from (0.38·10–3 to 1.91·10–3) mol·mol–1 for glyceryl trioleate. The results were compared with those found in the literature. The experimental data were correlated using a density based model proposed by Chrastil.
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