Počet záznamů: 1  

Solubility of Two Vegetable Oils in Supercritical CO2

  1. 1. 0166182 - UCHP-M 20013038 RIV NL eng J - Článek v odborném periodiku
    Sovová, Helena - Zarevúcka, Marie - Vacek, Miroslav - Stránský, Karel
    Solubility of Two Vegetable Oils in Supercritical CO2.
    Journal of Supercritical Fluids. Roč. 20, č. 1 (2001), s. 15-28. ISSN 0896-8446
    Grant CEP: GA ČR GA203/99/1457; GA ČR GA203/98/1445
    Výzkumný záměr: CEZ:AV0Z4072921
    Klíčová slova: vegetable oil * supercritical CO2 * solubility
    Kód oboru RIV: CI - Průmyslová chemie a chemické inženýrství
    Impakt faktor: 1.975, rok: 2001

    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.
    Trvalý link: http://hdl.handle.net/11104/0063327