Dextrose Monohydrate is a white crystalline powdered sugar obtained from the complete hydrolysis of corn starch. With its pleasant, clean and sweet taste, dextrose has been used for years as a sweetener in a wide range of food applications. Dextrose is one of the sweetest of the starch derived sugars. On a scale on which sucrose is assigned a sweetness value of 100, dextrose is rated at 75.