Patent ID: 11945835
Assignee: ROQUETTE FRERES
Field: Chemical engineering (Chemistry)
Classification: CPC C  A  B | IPC A  B  C

Claim 0:
1. Process for producing D-allulose crystals comprising:
a step of providing a composition rich in D-allulose;
at least one nanofiltration step of said composition rich in D-allulose so as to provide a retentate and a permeate, said nanofiltration step being performed with a membrane having a cut-off threshold of less than 300 Da;
a step of recovering the nanofiltration permeate;
a step of concentrating said permeate so as to form a stock solution to be crystallized;
a step of crystallizing the stock solution so as to form D-allulose crystals and mother liquors.