| abstract |
(57) Abstract: [PROBLEMS] To obtain a Raney catalyst for a fixed bed that solves various conventional problems, and to use the Raney catalyst to produce high-purity crystalline maltitol at low cost. SOLUTION: 1) Maltose is 81 to 90 in the solid content. The first step of obtaining a corresponding sugar alcohol syrup by continuous catalytic hydrogen reduction of a syrup having a concentration of 30% to 75% by weight, 2) The sugar alcohol syrup is supplied to a column packed with a cation exchange resin for chromatographic separation. Then, the second step of obtaining a syrup fraction having a high maltitol content in which the solid content contains 95% by weight or more of maltitol, 3) a syrup fraction having a high maltitol content is concentrated, and then continuously crystallized, Crystallized maltitol and mother liquor are obtained, and the mother liquor is sequentially mixed with the sugar alcohol syrup obtained in the first step, and the third step, which is used in the second step, is sequentially passed. |