Enzymes have been of increasing
interest in the field of beer and spirits.
Various enzymes are used in the brewing and fermentation processes at nearly
every step. There are some differences
in the types of enzymes used for the production of beer and alcohol, but the
processes of rendering fermentable sugars from a source and then fermenting
them are similar. There has been
considerable work on enzyme science and the production of alcohol. The creation of new processes to prevent
deactivation of enzymes in low calorie beer production, to genetically altered
enzymes that can split non-fermentable dextrins in to fermentable sugars, are
two examples that will be covered in better detail later. A secondary area of study on alcohol and
enzymes has been on human enzyme mutations that effect alcohol metabolism in
the body and how these differences are split by ethnic lines.
In simple home brewing operations
there are only two basic enzymes that are of concern, alpha-amylase and beta-amylase. These two enzymes can control flavor, body,
alcohol content, and a creamy feeling. An
entire family of enzymes known as proteolytic enzymes is capable of splitting complex
protein chains in to simpler proteins and amino acids which can affect rate of
fermentation, clarity, quality of the beer, and the head of the beer. Small scale home brewers would not have to
worry about enzyme concentration in most cases but as production moves to large
scale manufacturing enzyme controls can give a much better control of the end
product as well as speed up processes.
MEW