The function of pullulanase, an enzyme, is to break down pullulan, a polysaccharide made up of glucose molecules linked together in a linear chain, into smaller sugar molecules such as maltotriose. This enzymatic activity is crucial in various industrial processes, particularly in the production of starch-derived products, such as syrups, sweeteners, and fermented foods. Pullulanase helps improve the efficiency of starch hydrolysis, leading to increased yields of fermentable sugars, enhanced sweetness, and improved texture in food products. Additionally, pullulanase can be used in combination with other enzymes to optimize the production of glucose syrups, maltodextrins, and other starch-based ingredients.