The correct answer would be digestion and isomerization.
Starch is a polysaccharide formed by a number of glucose units.
The glucose units are attached with the help of glycosidic bonds.
In the digestion process, the polysaccharide is converted into simple glucose units with the help of different types of amylase enzymes such as alpha-amylase, glucoamylase.
In isomerization, some of the glucose units (40-50 percent) are isomerized to fructose with the help of glucose isomerase enzyme.
To help separate the starch from the corn kernels, sodium hydroxide or lye is used. After this process is completed, the starch goes through a series of bacteria made enzymes. These enzymes break the starch down into glucose, which is needed to make the high-fructose syrup.
