Method for making crystallized fructose
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United States of America Patent
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Aug 19, 2003
Grant Date -
N/A
app pub date -
Jan 5, 2001
filing date -
Jul 8, 1998
priority date (Note) -
Expired
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Abstract
The invention relates to a method for making crystallized fructose comprising preparing a pure fructose syrup by melting fructose dihydrate crystals, concentrating the melt by heating under reduced pressure to obtain a dry matter content above 96% by weight, seeding the concentrated syrup with fructose crystals, and solidifying the seeded syrup. In a preferred process, the time between the melting the fructose dihydrate crystals and the concentration of the syrup to a dry matter content above 96% by weight is less than 24 hours, preferably less than 8 hours. The invention also relates to crystallized fructose produced by the process of the present invention wherein the fructose is comprised primarily of the beta-D-fructopyranose fructose crystals tautomers with low amounts of other fructose tautomers which are considered impurities in the crystallization context.
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