Profile: Chemzyme Biotechnology Co.,Ltd specializes in providing enzymes, sweeteners, food additives and bio-pharmaceuticals. Our products are used in healthcare, alcohol, brewing, baking, beverage, starch sugar and animal industries. Alpha-acetolactate decarboxylase (ALDC) is obtained by controlled fermentation of bacillus subtilis. It is one of the important enzyme in brewing industry and its key role is to reduce the content of diacetyl in beer to a level well below the threshold, which will otherwise cause unpleasant tasting of this kind of products. By adding ALDC the period of maturing & fermentation can be shortened up to 30%-40%. This in turn increases the productivity up to 35%, prevent the bounce-back of diacetyl during storage of beer and then ensure the fresh flavor of beer & improve its quality and shelf life.