4.1.1.5	nutrition	ADC has a practical application in brewing, used to speed maturation	
4.1.1.5	nutrition	use of enzyme allows the acceleration of beer fermentation/maturation because it shunts diacetyl formation, new process involving recoverable encapsulated enzyme	
4.1.1.5	synthesis	cloning and expression of the acetolactate decarboxylase gene of Enterobacter aerogenes in Saccharomaces uvarum is carried out to repress the diacetyl formation	
4.1.1.5	synthesis	production of acetoin, which is used in beer fermentation procedures, where diacetyl is produced as by-product and has to be eliminated