Enrichment of Supercritical Extracts in beta-Sitosterol by Fractionation Process

0347238 - ÚCHP 2011 CZ eng C - Konferenční příspěvek (zahraniční konf.)
Rochová, Kristina - Sovová, Helena - Sajfrtová, Marie - Bártlová, Milena
Enrichment of Supercritical Extracts in beta-Sitosterol by Fractionation Process.
Summaries 2. Praha: Process Engineering Publisher, 2010, s. 606. ISBN 978-80-02-02247-3.
[International Congress of Chemical and Process Engineering CHISA 2010 and 7th European Congress of Chemical Engineering ECCE-7 /19./. Prague (CZ), 28.08.2010-01.09.2010]
Grant CEP: GA MŠMT 2B06024
Výzkumný záměr: CEZ:AV0Z40720504
Klíčová slova: beta-sitosterol * fractionation process * supercritical extraction
Kód oboru RIV: CI - Průmyslová chemie a chemické inženýrství
www.chisa.cz/2010, www.ecce7.com

The aim of this contribution was to use the extraction with supercritical CO2 coupled with fractionation of extract for preparation of extracts rich in beta-sitosterol. Phytosterols have been proved to lower serum cholesterol levels in humans and to have other benefit for human health. Supercritical extraction is a green method to separate such compounds from plants. Sea buckthorn seeds and sunflower seeds were extracted and a mathematical model was applied to determine separation factor of beta-sitosterol as minor component of extract. According to the obtained results, conditions of fractionation were set up. The most important enrichment of a part of extract from seeds with beta-sitosterol was achieved with fractionation in two separators (first separator kept at 15MPa and 50°C) and subsequent fractionation in time at the output of the second separator.
Trvalý link: http://hdl.handle.net/11104/0188058