Patent ID: 6479657
Filing Date: 2002-11-12
Classification: C07H,C12P,C30B

Abstract:
A process for producing crystal 1-kestose comprising the steps of:(a) concentrating a highly pure 1-kestose solution having 80% or more of 1-kestose to a Brix of at least 75, adding seed crystals, and then heating the resultant concentrate to a temperature of at least 60Â° C. to allow the crystals to grow, (b) concentrating the concentrate under a reduced pressure to allow the crystals to grow, (c) heating the concentrate to redissolve microcrystals which have been generated in the concentrate and, if the microcrystals fail to redissolve completely, adding water to the concentrate to dissolve the microcrystals, and (d) repeating at least once steps (b) and (c) and recovering the crystal 1-kestose.