Carlsberg Research Communications

, Volume 48, Issue 3, pp 239-247

First online:

On the occurrence of α-acetolactate decarboxylases among microorganisms

  • Sven Erik GodtfredsenAffiliated withDepartment of Chemistry, Carlsberg Laboratory
  • , Henning LorckAffiliated withLEO-Pharmaceutical Products
  • , Poul SigsgaardAffiliated withDepartment of Chemistry, Carlsberg Laboratory


The ability to generate α-acetolactate decarboxylase activity has been detected among bacteria but not among members of any other group of microorganisms. Among bacteria found to produce an α-acetolactate decarboxylase several, such as strains of Bacillus and Lactobacillus, are potential sources of decarboxylases which may be applied in brewing.


Acetoin beer beer maturation 2,3-butanediol diacetyl screening