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Glucose oxidase is a group of enzymes produced by deep fermentation of selected Aspergillus niger, followed by refining and extraction through microfiltration, ultrafiltration, and vacuum freeze-drying techniques. It is widely used in food deoxidation, flour improvement, prevention of food browning, and applications in products such as wine, beer, fruit juice, and milk powder.
Glucose oxidase can convert glucose into gluconic acid in the presence of oxygen. At the same time, hydrogen peroxide is produced. Hydrogen peroxide is a very strong oxidizing agent. It can oxidize the sulfhydryl groups (-SH) in gluten molecules into disulfide bonds (-S-S-), thereby enhancing the strength of the gluten. This improves the dough's extensibility and increases the volume of the bread.