| Naslov: | Separation of parthenolide from feverfew: performance of conventional and high-pressure extraction techniques |
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| Avtorji: | ID Čretnik, Lucija (Avtor)
ID Škerget, Mojca (Avtor)
ID Knez, Željko (Avtor) |
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| Datoteke: |  http://dx.doi.org/10.1016/j.seppur.2004.03.011
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Neznano |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: | FKKT - Fakulteta za kemijo in kemijsko tehnologijo
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| Opis: | In present work the extraction of feverfew flower heads was performed using supercritical carbon dioxide at pressures from 200 to 800 bar and at temperatures of 40, 60 and 80 °C. For comparison, the conventional extractionswith organic solvents have been performed. Dry feverfew flower heads were used as starting material. Supercritical fluid extraction (SFE) wasperformed using a semi continuous flow apparatus in a laboratory and pilot scale. The influence of process parameters on the total yield and amount of parthenolide isolated was investigated. Dynamic behaviour of the extraction runs followed by single-step separation was analysed by a mathematical model for initial constant rate extraction period and the subsequent time-dependant diffusion controlling mass transfer rate period. In order to concentrate the obtained extract in parthenolide, a two-step separation was employed. |
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| Ključne besede: | chemical processing, high pressure extraction, conventional extraction, supercritical CO2, parthenolide, feverfew, extraction rate, mass transfer |
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| Leto izida: | 2005 |
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| PID: | 20.500.12556/DKUM-27206  |
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| UDK: | 66.061-987 |
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| COBISS.SI-ID: | 9103894 |
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| ISSN pri članku: | 1383-5866 |
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| NUK URN: | URN:SI:UM:DK:UQWQPD7S |
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| Datum objave v DKUM: | 01.06.2012 |
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| Število ogledov: | 2273 |
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| Število prenosov: | 116 |
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| Metapodatki: |    |
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| Področja: | Ostalo
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