Method for purifying sucralose
AssigneeAnhui Jinhe Industrial Co., Ltd.
InventorsZhenghua Li, Jiaxin Xia, Chuanjiu Xu, Guojia Xu
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Abstract
Disclosed is a method for purifying sucralose, including: removing a solvent from a sucralose reaction solution to obtain a concentrated crude sucralose solution; under stirring, adding ethyl acetate into the concentrated crude sucralose solution, heating to a preset temperature, and holding at the preset temperature for a first preset time to obtain a crude product slurry with a certain amount of a sucralose crystal; and subjecting the crude product slurry to gradient cooling to an endpoint temperature, holding at the endpoint temperature for a second preset time, and filtering to obtain a sucralose crystal.
Claims21
A method for purifying sucralose, comprising:
- removing a solvent from a sucralose reaction solution to obtain a concentrated crude sucralose solution;
- under stirring, adding ethyl acetate into the concentrated crude sucralose solution, heating to a preset temperature, and holding at the preset temperature for a first preset time to obtain a crude product slurry containing a certain amount of a sucralose crystal;
- and
- under stirring, subjecting the crude product slurry to gradient cooling to an endpoint temperature, holding at the endpoint temperature for a second preset time, and filtering to obtain a sucralose crystal.
2-10. (canceled)
Dependencies are inferred from the claim text.