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Advances in molecular modification and efficient expression of key enzymes for functional saccharide preparation
Abstract:Functional saccharide is a general term that is often used to refer to the functional oligosaccharides,functional saccharide alcohols,and functional dietary fibers.These functional saccharides exhibit some health benefiting effects,such as having low calorie,preventing dental caries,and regulating intestinal disorders.Functional saccharides are widely used in food,health products,and the healthcare fields.The preparation of functional saccharides is accomplished mainly through reactions involving transglycosylation,isomerization,or hydrolysis catalyzed by glycosyltransferases,saccharide isomerases,and glycohydrolases,respectively.However,the poor catalytic properties of natural enzymes and low fermentation yields have restricted the large-scale industrial production of functional saccharides.Therefore,molecular modification and efficient expression of key enzymes for functional-saccharide preparation are very important for promoting the low-cost large-scale production of functional saccharides.In this report,the recent advances in functional optimization and expression preparation of enzymes related to functional saccharides are reviewed.
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