Original title: Enrichment of Supercritical Extracts in beta-Sitosterol by Fractionation Process
Authors: Rochová, Kristina ; Sovová, Helena ; Sajfrtová, Marie ; Bártlová, Milena
Document type: Papers
Conference/Event: International Congress of Chemical and Process Engineering CHISA 2010 and 7th European Congress of Chemical Engineering ECCE-7 /19./, Prague (CZ), 2010-08-28 / 2010-09-01
Year: 2010
Language: eng
Abstract: 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.
Keywords: beta-sitosterol; fractionation process; supercritical extraction
Project no.: CEZ:AV0Z40720504 (CEP), 2B06024 (CEP)
Funding provider: GA MŠk
Host item entry: Summaries 2, ISBN 978-80-02-02247-3
Note: Související webová stránka: www.chisa.cz/2010, www.ecce7.com

Institution: Institute of Chemical Process Fundamentals AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0188058

Permalink: http://www.nusl.cz/ntk/nusl-41665


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