| 摘要 |
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 mm Hg to provide an at least 60% supersaturated solution of greater than 95% solids at a temperature of from 95 DEG to 140 DEG 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 uncrystallized syrup into a quiescent layer and allowing the layer to crystallize substantially isothermally to produce solid crystalline glucose. |
