| abstract |
The invention discloses a method for preparing crystalline fructose by using starch in the related technical field of saccharide production, which comprises the steps of hydrolyzing starch into glucose solution by using enzyme; converting part of glucose into fructose through isomerization reaction to obtain high fructose syrup; adding carbon for decolorization, filter pressing, ion exchange, and evaporating and concentrating; adsorption separation by a chromatographic column; evaporating and concentrating by adopting a multi-effect falling film evaporator; evaporating by using a vacuum scraper evaporator; cooling and crystallizing to obtain crystalline fructose; the preparation process comprises hydrolysis, isomerization reaction, ion exchange, concentration, chromatographic column adsorption separation, evaporation, crystallization and the like, so that the prepared crystalline fructose has good product quality, and the production benefit is improved by ensuring the quality. |