Crystalline glucose and process for its production

Details Crystalline glucose and process for its production Crystalline glucose and process for its production

C - Chemistry, Metallurgy

13

K

260/234.5

C13K 1/10 (2006.01)

Patent

CA 1171853

ABSTRACT A product comprising a mixture of .alpha.- and .beta.- forms of glucose as microcrystals, at least 70% of the glucose being in the form of the .beta.-isomer, dissolves readily in water to give approximately 60% solids solutions at ambient temperature. It is obtained by a process comprising the steps of 1) evaporating water from syrup at a pressure of less than 400 mg Hg to provide an at least 60% supersaturated solution of greater than 95% solids at a temperature of from 95° to 140°C; 2) subjecting the supersaturated solution substantially instantaneously to a shear force to cause immediate nucleation of the syrup without cooling; and 3) immediately forming the nucleated but substantially uncrystallised syrup into a quiescent layer and allowing the layer to crystallise substantially isothermally to produce solid crystalline glucose.

371741

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