| abstract |
(57) Abstract: [PROBLEMS] To provide a method capable of industrially inexpensively mass-producing syrup containing a high content of nigerooligosaccharides. SOLUTION: For example, a glucose liquefaction having a degree of glucose polymerization of 2 or more, which is obtained by reacting a starch liquefaction liquid with one or more selected from α-amylase, β-amylase, oligosaccharide-forming amylase, and debranching enzyme. Containing 30% by weight or more of nigerooligosaccharides in the solid sugar content by using an aqueous sugar solution containing 50% by weight or more of sugars in the solid sugar content as a substrate, and causing an enzyme that produces a nigerooligosaccharide by a sugar transfer / condensation reaction to act. A syrup containing a nigerooligosaccharide is obtained. The starch liquefaction liquid is allowed to act simultaneously with one or more selected from α-amylase, β-amylase, oligosaccharide-forming amylase, and debranching enzyme and an enzyme that produces a nigerooligosaccharide by a sugar transfer / condensation reaction. May be. |