Analysis of volatile phenols in alcoholic beverage by ethylene glycol-polydimethylsiloxane based stir bar sorptive extraction and gas chromatography-mass spectrometry

Journal of Chromatography. a
Qin ZhouMichael C Qian

Abstract

An ethylene glycol (EG)/polydimethylsiloxane (PDMS) copolymer based stir bar sorptive extraction (SBSE)-GC-MS method was developed for the analysis of volatile phenols (4-ethylphenol, 4-vinylphenol, 4-ethylguaiacol, and 4-vinylguaiacol) in alcoholic beverages. The beverage samples were diluted with phosphate buffer (1M, pH 7) and extracted with an EG/PDMS stir bar. Volatile phenols were thermally desorbed and analyzed by GC-MS. Parameters affecting extraction efficiency were studied including ionic strength, pH, extraction time, ethanol content and nonvolatile matrix. Good correlation coefficients with R(2) in the range of 0.994-0.999 were obtained for volatile phenol concentration of 5-500μg/L. Recovery for all phenols were from 95.7% to 104.4% in a beer matrix and 81.4% to 97.6% in a wine matrix. The method had a standard deviation less than 5.8% for all volatile phenols. The limit of quantification (LOQs) in beer samples was lower than 3μg/L. The method was further applied to analyze the concentrations of volatile phenols in beer, wine and other alcoholic beverage samples.

References

Dec 1, 2000·Applied and Environmental Microbiology·S van Beek, F G Priest
Jun 13, 2003·Journal of Chromatography. a·Remedios Castro MejíasCarmelo García Barroso
Feb 7, 2004·Journal of Chromatography. a·Juan DíezCarmelo G Barroso
Jun 9, 2005·Journal of Agricultural and Food Chemistry·Toru KishimotoKatsuyuki Kawatsura
Nov 4, 2005·Journal of Chromatography. a·J MarínM R Salinas
Oct 26, 2006·Journal of Agricultural and Food Chemistry·Yu Fang, Michael C Qian
May 30, 2008·Journal of Chromatography. a·Tomás HorákVladimír Kellner
Dec 24, 2009·Journal of Separation Science·Consuelo PizarroJosé María González-Sáiz
Mar 20, 2013·Journal of Pharmaceutical and Biomedical Analysis·Juan Ignacio CachoManuel Hernández-Córdoba
Oct 8, 2013·Journal of Chromatography. a·Nobuo OchiaiPat Sandra

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Citations

Dec 25, 2015·Journal of Agricultural and Food Chemistry·Fang Yuan, Michael C Qian
Jun 21, 2016·Journal of Agricultural and Food Chemistry·Fang YuanMichael C Qian
Jul 5, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Pengtao ZhaoHua Li

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