1, sucrose isomerase catalysis: sucrose is used as raw material, and sucrose is converted into isomaltulose under the catalysis of sucrose isomerase. Sucrose isomerase is an enzyme that can catalyze the rearrangement of chemical bonds in sucrose molecules and convert it into isomaltulose.

2. Starch hydrolysis synthesis method: starch syrup is used as raw material to hydrolyze starch under specific conditions to obtain starch syrup. Under the action of catalyst, starch syrup was synthesized into isomaltulose.