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J Agric Food Chem

Title:		Elucidating the Odor-Active Aroma Compounds in Alcohol-Free Beer and Their Contribution to the Worty Flavor
Author(s):		Piornos JA; Balagiannis DP; Methven L; Koussissi E; Brouwer E; Parker JK;
Address:		"Department of Food and Nutritional Sciences, University of Reading, Reading RG6 6AP, U.K. Global Innovation & Research, Heineken Supply Chain BV, Burgemeester Smeetsweg, 1, Zoeterwoude 2382 PH, The Netherlands"
Journal Title:		J Agric Food Chem
Year:		2020
Volume:		20200831
Issue:		37
Page Number:		10088 - 10096
DOI:		10.1021/acs.jafc.0c03902
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Print) 0021-8561 (Linking)
Abstract:		"Alcohol-free beers (AFBs) brewed by cold-contact fermentation exhibit a flavor reminiscent of wort which affects consumer acceptability. The aims of this study were to identify the odor-active compounds in AFB and elucidate the contribution of these to the overall aroma and worty character of the beer. Using a sensomics approach, 27 odor-active aroma compounds were identified and quantitated using gas chromatography-mass spectrometry. The most odor-active compound was methional (boiled potato-like aroma), followed by 3-methylbutanal (cocoa-like), (E)-beta-damascenone (apple, jam-like), 5-ethyl-3-hydroxy-4-methyl-2(5H)-furanone (curry, spicy-like), and phenylacetaldehyde (floral, honey-like). The important contribution of these flavor compounds to the worty and honey aroma of AFB was determined by sensory assessment of the recombinate in a beer-like matrix with omission tests. The role of 5-ethyl-3-hydroxy-4-methyl-2(5H)-furanone in AFB aroma was reported for the first time. The outcomes from this study are of relevance for the brewing industry to design strategies for the reduction of the wortiness of AFB"
Keywords:		Alcohols/analysis Beer/*analysis Flavoring Agents/*chemistry Gas Chromatography-Mass Spectrometry Humans Odorants/*analysis Smell Taste Volatile Organic Compounds/*chemistry alcohol-free beer aroma extract dilution analysis aroma recombination omission te;
Notes:		"MedlinePiornos, Jose A Balagiannis, Dimitrios P Methven, Lisa Koussissi, Elisabeth Brouwer, Eric Parker, Jane K eng 2020/08/18 J Agric Food Chem. 2020 Sep 16; 68(37):10088-10096. doi: 10.1021/acs.jafc.0c03902. Epub 2020 Aug 31"