Amended version of the article "Boost savings by removing cold stabilisation"
A proline-specific protease preparation has been commercially available from DSM Food Specialties since 2005. Called Brewers Clarex™, this product is a highly concentrated solution of a food grade, acid stable enzyme that exhibits a strong preference for cleaving protein chains next to proline residues. The enzyme is added during the primary fermentation phase and is currently marketed as an alternative to PVPP and/or silica treatments. The efficacy of the enzyme is illustrated by the fact that quantities of not more than two ml/hl wort are required to prevent chill haze formation and to produce beers that are completely stable.
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