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Supercritical Fluid Extraction of Minor Components of Vegetable Oils: beta-Sitosterol
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SYSNO ASEP 0346388 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Supercritical Fluid Extraction of Minor Components of Vegetable Oils: beta-Sitosterol Author(s) Sovová, Helena (UCHP-M) RID, ORCID, SAI
Galushko, A.A. (BG)
Stateva, R.P. (BG)
Rochová, Kristina (UCHP-M)
Sajfrtová, Marie (UCHP-M) RID, ORCID, SAI
Bártlová, Milena (UCHP-M)Source Title Journal of Food Engineering. - : Elsevier - ISSN 0260-8774
Roč. 101, č. 2 (2010), s. 201-209Number of pages 9 s. Language eng - English Country GB - United Kingdom Keywords supercritical fluid extraction ; sea buckthorn oil ; beta-sitosterol Subject RIV CI - Industrial Chemistry, Chemical Engineering R&D Projects 2B06024 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z40720504 - UCHP-M (2005-2011) UT WOS 000281334000010 DOI 10.1016/j.jfoodeng.2010.07.002 Annotation The extracts of valuable vegetable oils containing a number of minor components have added value as pharmaceuticals and food additives. Beta-sitosterol (BS) as minor component of vegetable oil was extracted from ground seeds of sea buckthorn with supercritical CO2 at pressures 15–60 MPa and temperatures 40–80°C. The changes in the BS content in extract in the course of the extraction were evaluated using HPLC and described in terms of phase equilibrium. It was shown that the separation factors used in counter-current fractionation of oils apply also to the initial period of oil extraction from ground seeds. The equilibrium compositions of a model BS and trilinolein and CO2 mixture were calculated using SRK and PSRK equations of state. The BS to triacylglycerol separation factor, ranging from 1.0 to 3.1, was correlated with CO2 density. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2011
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