About: Analysis of free fatty acids in beer: Comparison of solid-phase extraction, solid phase microextraction, and stir bar sorptive extraction

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	SPE, SPME and SBSE followed by solvent back extraction have been used for the extraction of free fatty acids (caproic - linolenic acids) from beer. Subsequent gas chromatographic analyses with flame ionization detection were used for the determination of these compounds. Medium-chain fatty acids (caproic-lauric acid) were determined as free acids, and long-chain fatty acids (myristic-linolenic acids) were determined as methyl esters after methylation by BF3-methanol 14%. Linearity, recovery, and repeatability of all methods have been determined and compared with the SPE method used as a reference. All three procedures provide similar working parameters characterized by high repeatability (2.3-16.3%) and good linearity (correlation coefficient ranging from 0.9919 to 0.9999). Results of beer analyses obtained by using these three methods were highly correlated. SPE, SPME and SBSE followed by solvent back extraction have been used for the extraction of free fatty acids (caproic - linolenic acids) from beer. Subsequent gas chromatographic analyses with flame ionization detection were used for the determination of these compounds. Medium-chain fatty acids (caproic-lauric acid) were determined as free acids, and long-chain fatty acids (myristic-linolenic acids) were determined as methyl esters after methylation by BF3-methanol 14%. Linearity, recovery, and repeatability of all methods have been determined and compared with the SPE method used as a reference. All three procedures provide similar working parameters characterized by high repeatability (2.3-16.3%) and good linearity (correlation coefficient ranging from 0.9919 to 0.9999). Results of beer analyses obtained by using these three methods were highly correlated. (en)
Title	Analysis of free fatty acids in beer: Comparison of solid-phase extraction, solid phase microextraction, and stir bar sorptive extraction Analysis of free fatty acids in beer: Comparison of solid-phase extraction, solid phase microextraction, and stir bar sorptive extraction (en)
skos:prefLabel	Analysis of free fatty acids in beer: Comparison of solid-phase extraction, solid phase microextraction, and stir bar sorptive extraction Analysis of free fatty acids in beer: Comparison of solid-phase extraction, solid phase microextraction, and stir bar sorptive extraction (en)
skos:notation	RIV/60193697:_____/09:#0000514!RIV10-MSM-60193697
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM6019369701)
http://linked.open...iv/cisloPeriodika	23
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Čejka, Pavel Dvořák, Josef Kellner, Vladimír Jurková, Marie Hašková, Danuša Horák, Tomáš Čulík, Jiří
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	Výzkumný ústav pivovarský a sladařský, a.s.
http://linked.open...dnocenehoVysledku	302875
http://linked.open...ai/riv/idVysledku	RIV/60193697:_____/09:#0000514
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Solid-phase extraction; SPE; solid-phase microextraction; SPME; solvent back extraction; stir bar sorptive extraction; SBSE; free fatty acids; beer (en)
http://linked.open.../riv/klicoveSlovo	stir bar sorptive extraction SPE SBSE Solid-phase extraction SPME beer free fatty acids solvent back extraction solid-phase microextraction
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[6967C5B4CFD3]
http://linked.open...i/riv/nazevZdroje	Journal of Agricultural and Food Chemistry
http://linked.open...in/vavai/riv/obor	CB
http://linked.open...ichTvurcuVysledku	7 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	57
http://linked.open...iv/tvurceVysledku	Dvořák, Josef Horák, Tomáš Kellner, Vladimír Čejka, Pavel Hašková, Danuša Jurková, Marie Čulík, Jiří
http://linked.open...ain/vavai/riv/wos	000272188300004
http://linked.open...n/vavai/riv/zamer	Research of malting and brewing raw materials and technologies
issn	0021-8561
number of pages	5 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Analysis of free fatty acids in beer: Comparison of solid-phase extraction, solid phase microextraction, and stir bar sorptive extraction Analysis of free fatty acids in beer: Comparison of solid-phase extraction, solid phase microextraction, and stir bar sorptive extraction Analysis of free fatty acids in beer: Comparison of solid-phase extraction, solid phase microextraction, and stir bar sorptive extraction Analysis of free fatty acids in beer: Comparison of solid-phase extraction, solid phase microextraction, and stir bar sorptive extraction

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