method to produce high purity d-psychosis

摘要

the present invention relates to a method for producing d-psychosis. the method for producing d-psychosis includes subjecting d-fructose to epimerization of d-psychosis to produce a solution containing d-psychosis, subjecting the solution containing d-psychosis to a first cooling and ion purification, submitting the solution containing d-psychosis purified to a first concentration and a second cooling, subject the solution containing d-psychosis that was subjected to the first concentration and the second cooling to chromatography to obtain a mother liquor containing d-fructose and a separate solution containing d-psychosis, and subject the separate solution containing d-psychosis to a second concentration and a third cooling to obtain crystals of d-psychosis, so that the mother liquor containing d-fructose produced by chromatography is reused in the epimerization of d-psychosis.