Method for preparing crystalline isomaltulose and hydrogenated isomaltulose
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United States of America Patent
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Issued Date -
Jul 28, 2005
app pub date -
Dec 30, 2004
filing date -
Jan 5, 2004
priority date (Note) -
Abandoned
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Abstract
Provided is a method for manufacturing crystalline isomaltulose from sucrose, comprising the steps of: 1) contacting an .alpha.-glucosyltransferase enzyme to aqueous sucrose solution or slurry under the condition wherein the .alpha.-glucosyltransferase enzyme is active; in which said condition is maintained after the concentration of isomaltulose in the reaction mixture reaches the point at which crystals are formed, and 2) separating the reaction mixture into crystalline isomaltulose and remaining syrup. According to the present invention, enzymatic conversion of sucrose and crystallization of isomaltulose are carried out simultaneously in a same reaction vessel. In addition, the enzyme can be used repeatedly.
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