Use of alpha-amylase from ASPERGILLUS CLAVATUS for saccharification
2013
A fungal alpha-amylase is provided from Aspergillus clavatus (AcAmy1). AcAmy1 has an optimal pH of 4.5 and is operable at 30-75 DEG C, allowing the enzyme to be used in combination with a glucoamylase in a saccharification reaction. This obviates the necessity of running a saccharification reaction as a batch process, where the pH and temperature must be readjusted for optimal use of the alpha-amylase or glucoamylase. AcAmy1 also catalyzes the saccharification of starch substrates to an oligosaccharide composition significantly enriched in DP2 and (DP1 + DP2) compared to the products of saccharification catalyzed by an alpha-amylase from Aspergillus kawachii. This facilitates the utilization of the oligosaccharide composition by a fermenting organism in a simultaneous saccharification and fermentation process, for example.
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