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Solubility of Two Vegetable Oils in Supercritical CO2
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SYSNO ASEP 0166182 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Solubility of Two Vegetable Oils in Supercritical CO2 Author(s) Sovová, Helena (UCHP-M) RID, ORCID, SAI
Zarevúcka, Marie (UOCHB-X) RID
Vacek, Miroslav (UOCHB-X)
Stránský, Karel (UOCHB-X)Source Title Journal of Supercritical Fluids. - : Elsevier - ISSN 0896-8446
Roč. 20, č. 1 (2001), s. 15-28Number of pages 14 s. Language eng - English Country NL - Netherlands Keywords vegetable oil ; supercritical CO2 ; solubility Subject RIV CI - Industrial Chemistry, Chemical Engineering R&D Projects GA203/99/1457 GA ČR - Czech Science Foundation (CSF) GA203/98/1445 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z4072921 - UCHP-M Annotation Dynamic method was applied to measure the solubility of oils from seed of Ribes nigrum (blackcurrant) and Vitis vinifera (grape-vine) in supercritical CO2 at pressures up to 29 MPa. The solubility of blackcurrant seed oil, which had been refined prior to the measurement and therefore it contained only triglycerides, was measured at 40-60 degreesC. It was correlated with CO2 density and temperature by adjusting the constants of Adachi-Lu equation. The obtained equation is suitable for predicting the solubility of triglycerides of most vegetable oils. The solubility of grape seed oil, containing large percentage of free fatty acids, mono- and diglycerides, was measured at 40 degreesC. It was twice as large as the solubility of refined blackcurrant seed oil, and it decreased after most of the free fatty acids had been extracted. A simplified stepwise model describing fractionation of the mixture during the solubility measurement was derived and applied to estimate the grape seed oil solubility and its changes. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2002
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