METHOD FOR PURIFYING SUCRALOSE
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United States of America Patent
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Issued Date -
Nov 23, 2023
app pub date -
Sep 30, 2020
filing date -
Sep 30, 2020
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Abstract
Disclosed is a method for purifying sucralose, sequentially including: adding sucralose to ultrapure water, heating the resulting mixture for dissolution to obtain a dissolved solution, filtering the dissolved solution to obtain a filtrate, and then extracting the filtrate with an extraction solvent to remove non-polar impurities; subjecting the extracted recrystallization solution to concentration by evaporation to obtain a concentrated recrystallization solution with a preset concentration, and leaving the concentrated recrystallization solution to stand at a preset temperature for a preset time to produce a sucralose crystal nucleus in the concentrated recrystallization solution; subjecting the concentrated recrystallization solution containing the sucralose crystal nucleus to programmed cooling to obtain a recrystallization solution with a large amount of a sucralose crystal; and centrifuging the recrystallization solution with a large amount of a sucralose crystal to obtain a solid, and subjecting the solid to water-washing and drying to obtain a sucralose crystal.
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