About: Steps of Supercritical Fluid Extraction of Natural Products and Their Characteristic Times

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Kinetics of supercritical fluid extraction (SFE) from plants is variable due to different micro-structure of plants and their parts, different properties of extracted substances and solvents, and different flow patterns in the extractor. Variety of published mathematical models for SFE of natural products corresponds to this diversification. This study presents simplified equations of extraction curves in terms of characteristic times of four single extraction steps: internal diffusion, external mass transfer, hypothetic equilibrium extraction without mass transfer resistance, and displacement of the solution from the extractor. Preliminary evaluation of experimental extraction curves using these equations facilitates the choice of proper detailed model for SFE and enables estimation of changes in the extraction kinetics with the changes in operation conditions and extraction geometry. Kinetics of supercritical fluid extraction (SFE) from plants is variable due to different micro-structure of plants and their parts, different properties of extracted substances and solvents, and different flow patterns in the extractor. Variety of published mathematical models for SFE of natural products corresponds to this diversification. This study presents simplified equations of extraction curves in terms of characteristic times of four single extraction steps: internal diffusion, external mass transfer, hypothetic equilibrium extraction without mass transfer resistance, and displacement of the solution from the extractor. Preliminary evaluation of experimental extraction curves using these equations facilitates the choice of proper detailed model for SFE and enables estimation of changes in the extraction kinetics with the changes in operation conditions and extraction geometry. (en)
Title	Steps of Supercritical Fluid Extraction of Natural Products and Their Characteristic Times Steps of Supercritical Fluid Extraction of Natural Products and Their Characteristic Times (en)
skos:prefLabel	Steps of Supercritical Fluid Extraction of Natural Products and Their Characteristic Times Steps of Supercritical Fluid Extraction of Natural Products and Their Characteristic Times (en)
skos:notation	RIV/67985858:_____/12:00379251!RIV13-AV0-67985858
http://linked.open...avai/predkladatel	Ústav chemických procesů Akademie Věd ČR, v.v.i.
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(2B06049)
http://linked.open...iv/cisloPeriodika	SI
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Sovová, Helena
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav chemických procesů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	171386
http://linked.open...ai/riv/idVysledku	RIV/67985858:_____/12:00379251
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	supercritical fluid extraction; vegetable oils; essential oils (en)
http://linked.open.../riv/klicoveSlovo	essential oils supercritical fluid extraction vegetable oils
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[35406B38BF05]
http://linked.open...i/riv/nazevZdroje	Journal of Supercritical Fluids
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	1 (xsd:int)
http://linked.open...vavai/riv/projekt	Optimisation of Supercritical Fluid Extraction for Maximal Yield of Biologically Active Substances from Plants
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	66
http://linked.open...iv/tvurceVysledku	Sovová, Helena
http://linked.open...ain/vavai/riv/wos	000305356600010
issn	0896-8446
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.supflu.2011.11.004
is http://linked.open...avai/riv/vysledek of	Steps of Supercritical Fluid Extraction of Natural Products and Their Characteristic Times

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