February 1 2017
This is an enzyme of microbial origin that breaks glucoside bonds in starch and dextrins to form glucose; used in the manufacturing of glucose and for converting carbohydrates to fermentable sugars (as in beer-brewing). Also known as glucoamylase. For information on digestive enzymes.
On-site production of crude glucoamylase for kitchen
Kitchen waste from dining rooms accounts for a considerable proportion of municipal solid garbage, and economical recycle ways are needed to be developed. This study investigated amyloglucosidase production from kitchen waste and the feasibility of kitchen waste hydrolysis by the crude enzymes produced. The key problems of high water content and poor porosity in kitchen waste for amyloglucosidase production under solid-state fermentation could be solved readily by the addition of corn stover or paddy husk. As a support medium, corn stover was better than paddy husk. Smashed kitchen waste (sKW) mixed with corn stover in the ratio of 3.75 : 1 (dry basis) produced 1838 U g(-1) of amyloglucosidase by Aspergillus niger UV-60 within 96 h. The enzyme productivity from kitchen waste was over two-fold higher than that from wheat bran with additional nutrients. Without any recovery treatment, the produced amyloglucosidase could be used directly to hydrolyse sKW slurry. Waste Manag Res. 2010. National Engineering Laboratory for Biomass Power Generation Equipment, School of Renewable Energy, North China Electric Power University, Beijing, China.