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Title:
PROCESS FOR PRODUCING CRYSTALLINE TAGATOSE
Document Type and Number:
WIPO Patent Application WO/2002/012257
Kind Code:
A1
Abstract:
A process for producing crystalline tagatose from an aqueous system containing no organic solvents. The process comprises adding seed tagatose crystals to a tagatose solution which has a solid concentration of 60 to 98 wt.% and in which the purity of the tagatose is 70% or higher based on the solid matter and stirring and cooling the resultant mixture while keeping the degree of supersaturation with tagatose at 1.25 or lower to crystallize the tagatose. The tagatose solution preferably contains no organic solvents. It is desirable that part of the massecuite resulting from the crystallization be added to the mother liquor to semicontinuously or continuously produce crystalline tagatose. The crystalline tagatose yielded from the massecuite is preferably taken out by centrifugal separation or filtration and dried.

Inventors:
UNNO TAKEHIRO (JP)
WATANABE YOSHIMI (JP)
YAMAMOTO MIKIO (JP)
Application Number:
PCT/JP2001/006789
Publication Date:
February 14, 2002
Filing Date:
August 07, 2001
Export Citation:
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Assignee:
JAPAN MAIZE PROD (JP)
UNNO TAKEHIRO (JP)
WATANABE YOSHIMI (JP)
YAMAMOTO MIKIO (JP)
International Classes:
C07H1/06; C07H3/02; C13B30/06; C13B30/02; C13B30/12; C13K13/00; (IPC1-7): C07H3/02; C07H1/06
Domestic Patent References:
WO1992012263A11992-07-23
Foreign References:
JPH05308984A1993-11-22
EP0532173A21993-03-17
JPH0892273A1996-04-09
EP0609801A11994-08-10
JPH06145186A1994-05-24
Other References:
See also references of EP 1310504A4
Attorney, Agent or Firm:
Matsui, Shigeru (Ginza 8-chome Chuo-ku Tokyo, JP)
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