Method for preparing resistant dextrin by using a starch branching enzyme and a cyclodextrin glycosyltransferase

摘要

Disclosed is a method for preparing a resistant dextrin product by using compound enzyme treatment. Starch is first subjected to high-temperature acidolysis to obtain pyrodextrin which is used as the substrate for the enzyme treatment. A compound enzyme reaction system including a starch branching enzyme and a CGTase is used for preparing the resistant dextrin product. The starch branching enzyme and the CGTase are added simultaneously or sequentially to treat the pyrodextrin to further increase the content of the resistant component in the product. The content of the resistant component of the enzyme treated product reaches up to 65.3%, a 21.3% increase from that of the pyrodextrin before the enzyme treatment.