Title: On the origin of free and bound staling aldehydes in beer
Authors: Baert, Jeroen
De Clippeleer, Jessika ×
Hughes, Paul S
De Cooman, Luc
Aerts, Guido #
Issue Date: Nov-2012
Publisher: American Chemical Society, Books and Journals Division
Series Title: Journal of Agricultural and Food Chemistry vol:60 issue:46 pages:11449-11472
Article number: 10.1021/jf303670z
Abstract: The chemistry of beer flavor instability remains shrouded in mystery, despite decades of extensive research. It is, however, certain that aldehydes play a crucial role because their concentration increase coincides with the appearance and intensity of "aged flavors". Several pathways give rise to a variety of key flavor-active aldehydes during beer production, but it remains unclear as to what extent they develop after bottling. There are indications that aldehydes, formed during beer production, are bound to other compounds, obscuring them from instrumental and sensory detection. Because freshly bottled beer is not in chemical equilibrium, these bound aldehydes might be released over time, causing stale flavor. This review discusses beer aging and the role of aldehydes, focusing on both sensory and chemical aspects. Several aldehyde formation pathways are taken into account, as well as aldehyde binding in and release from imine and bisulfite adducts.
ISSN: 0021-8561
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Technologiecluster Bioengineering Technologie
Bioengineering Technology TC, Technology Campuses Ghent and Aalst
× corresponding author
# (joint) last author

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