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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60193697%3A_____%2F09%3A%230000514" target="_blank" >RIV/60193697:_____/09:#0000514 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 ofthese 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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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 ofthese 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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Agricultural and Food Chemistry

ISSN

0021-8561

e-ISSN

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Svazek periodika

57

Číslo periodika v rámci svazku

23

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

000272188300004

EID výsledku v databázi Scopus

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