Abstract: α-glucosidase is a key enzyme preparation for industrial production of isomalto-oligosaccharides (IMOs), and it plays an important role in improving the catalytic efficiency and reducing the production cost, which has been widely concerned by scholars. The sources, properties, classification and catalytic mechanism of α-glucosidase were reviewed, and the strategy for high-efficient synthesis of IMOs by α-glucosidase was analyzed. The prospect of industrial and high-efficient production of IMOs was also discussed, aiming to provide a reference for high-efficient and clean production of IMOs.
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