Overview on Brewing Yeast Stress Factors

The environmental changes directly affect cellular activity, the ones interfering with their optimal activity or jeopardizing their life are known as stress factors. Both prokaryotes and eukaryotes are able to respond such changes through a complex network of reception and signaling which determines adaptation of growth and multiplication, gene expression modeling, metabolic a ctivity as well as other cellular changes. In the brewing industry, the conditions used for industrial fermentation impose a variety of stresses upon the inoculum. Moreover, the modern brewing techniques like high gravity brewing or the use of dried yeast as inoculum increase the magnitude of stresses imposed to brewing yeast cells. Knowledge on yeast capacity to respond effectively to the continuously changing conditions is essential for both beer quality and maintenance of yeast fermentation performance.