Patent ID: 6538133
Filing Date: 2003-03-25
Classification: C07C,C12P,C13B

Abstract:
A process for producing xylitol of high purity which comprises the steps of (1) removing solid matter from a culture broth obtained by culturing a xylitol-producing microorganism in an aqueous culture medium, (2) desalting the resulting solid matter-removed culture broth by removing the ionic substances therefrom by means of a cation-exchange resin and an anion-exchange resin, (3) subjecting the resulting desalted solution to chromatography using a strongly acidic cation-exchange resin to separate xylitol from other sugar alcohol(s) and sugar(s) and to obtain a xylitol solution fraction, and (4) obtaining xylitol by separating it at a high purity from the resulting xylitol solution fraction.