Yeast fungus will be a lot to exocrine cell α- amylase, β- amylase, α- glucosidase and glucoamylase (γ- amylase), you can make rice and wheat starch hydrolyzate contained.
• α- amylase: capable of hydrolyzing starch to any α-1,4- glycosidic linkages, the final product is maltose, but not hydrolyze α-1,6 glycosidic bond.
• β- amylase: capable of acting on non-reducing end of starch, maltose units sequentially cut apart the α-1,4- glycosidic bond, hydrolysis of β- maltose, but not hydrolyze α-1,6 glycosidic bond.
• glucoamylase: capable of acting on the non-reducing ends of starch, glucose units of starch hydrolysis. Can act simultaneously on the α-1,4- and α-1,6 glycosidic bonds glycosidic bonds, so can not be obtained from the substrate is relatively small molecular weight of the starch molecule.
α- glucosidase: hydrolysis of maltose, produce glucose. Polysaccharide compounds widely found in animal and plant cell membranes, cell walls of microorganisms, is a polymer from aldehyde and ketone groups via glycoside bonds, but also constitute one of the four basic substance of life.
1950s found that fungal polysaccharides have anti-cancer effects, and later found that lichens, pollen and how many plants are inclusive of carbohydrates, and separation and purification, to determine its chemical structure, physical and chemical properties, pharmacological effects, especially on more carbohydrates the anti-tumor and immune enhancement in-depth study.