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Profiling the ester aroma of fruity beers using comprehensive twodimensional gas chromatography: a comparison of flow and cryogenic modulators
Massenet, Thibault; Muller, Hugo; Dubois, Lena et al.
2020
 

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Keywords :
GCxGC; Analytical Chemistry; Learning
Abstract :
[en] Beer aroma results from a complex mixture of volatile compounds that derive mainly from its raw ingredients and during processing. To characterize such a complex gas mixture, comprehensive two-dimensional gas chromatography coupled with mass spectrometry (GCXGC-MS) has proven to be a powerful analytical method. Moreover, this technique can be easily coupled to headspace solid phase micro extraction (HS-SPME), which permits a straightforward and rapid sampling of volatile organic compounds (VOCs). This paper reports on the relative performances of two different types of GCxGC modulator, a flow modulator and a cryogenic modulator, for characterizing the VOC signature of the headspace of five Belgian fruity beers. Particular emphasis is placed on the ester fraction of these volatile compounds. The results demonstrate that the cryogenic modulator permits a better overview of the molecular composition of the beer headspace, detecting nearly three times more molecules than the flow modulator.
Disciplines :
Chemistry
Author, co-author :
Massenet, Thibault  ;  Université de Liège - ULiège > Master en sc. chimiques, à fin.
Muller, Hugo ;  Université de Liège - ULiège > Master en sc. chimiques, à fin.
Dubois, Lena ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie analytique, organique et biologique
Stefanuto, Pierre-Hugues  ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie analytique, organique et biologique
Focant, Jean-François  ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie analytique, organique et biologique
Language :
English
Title :
Profiling the ester aroma of fruity beers using comprehensive twodimensional gas chromatography: a comparison of flow and cryogenic modulators
Publication date :
2020
Course title or code :
CHIM0657-1 Techniques Émergentes en Sciences de Séparation
Institution :
ULiège - Université de Liège
Commentary :
This report was written in the context of the class by master students. It was peer-review by members of the OBIACHEM laboratory to provide full scientific writing experience.
Available on ORBi :
since 04 June 2020

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