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The chemistry of beer aging – a critical review
Currently, the main quality problem of beer is the change of its chemical composition during storage, which alters the sensory properties. A variety of flavours may arise, depending on the beer typeExpand
Expression Levels of the Yeast Alcohol Acetyltransferase Genes ATF1, Lg-ATF1, and ATF2 Control the Formation of a Broad Range of Volatile Esters
ABSTRACT Volatile aroma-active esters are responsible for the fruity character of fermented alcoholic beverages such as beer and wine. Esters are produced by fermenting yeast cells in anExpand
Flavor-active esters: adding fruitiness to beer.
As they are responsible for the fruity character of fermented beverages, volatile esters constitute an important group of aromatic compounds in beer. In modern high-gravity fermentations, which areExpand
Yeast flocculation: what brewers should know
For many industrial applications in which the yeast Saccharomyces cerevisiae is used, e.g. beer, wine and alcohol production, appropriate flocculation behaviour is certainly one of the most importantExpand
Brettanomyces yeasts--From spoilage organisms to valuable contributors to industrial fermentations.
Ever since the introduction of controlled fermentation processes, alcoholic fermentations and Saccharomyces cerevisiae starter cultures proved to be a match made in heaven. The ability of S.Expand
Bioflavoring and beer refermentation
Various techniques are used to adjust the flavors of foods and beverages to new market demands. Although synthetic flavoring chemicals are still widely used, flavors produced by biological methodsExpand
Screening and evaluation of the glucoside hydrolase activity in Saccharomyces and Brettanomyces brewing yeasts
Aims:  The aim of this study was to select and examine Saccharomyces and Brettanomyces brewing yeasts for hydrolase activity towards glycosidically bound volatile compounds.
Evolution of chemical and sensory properties during aging of top-fermented beer.
The aging and consequent changes in flavor molecules of a top-fermented beer were studied. Different aging conditions were imposed on freshly bottled beer. After 6 months of aging, the concentrationExpand
The Saccharomyces cerevisiae alcohol acetyl transferase gene ATF1 is a target of the cAMP/PKA and FGM nutrient-signalling pathways.
The ATF1-encoded Saccharomyces cerevisiae yeast alcohol acetyl transferase I is responsible for the formation of several different volatile acetate esters during fermentations. A number of theseExpand
Glucose and sucrose: hazardous fast-food for industrial yeast?
Yeast cells often encounter a mixture of different carbohydrates in industrial processes. However, glucose and sucrose are always consumed first. The presence of these sugars causes repression ofExpand