Title:
METHOD FOR GLUTAMIC ACID PURIFICATION BY TRANSITION AND RECRYSTALLIZATION
Document Type and Number:
Japanese Patent JP2003040848
Kind Code:
A
Abstract:
To simply and readily obtain purified glutamic acid crystal remarkably rapidly in a high yield on an industrial scale in comparison with a transition and recrystallization method for L-glutamic acid purification which is conventionally carried out in general.
In this method for L-glutamic acid purification by transition and recrystallization, crude crystal of L-glutamic acid containing L-glutamic acid α-crystal is kept in an aqueous medium in an amount sufficient to prepare a saturated solution of the L-glutamic acid crystal or less in the presence of activated carbon at ≥50°C and the boiling point of the aqueous medium or below until ≥about 30% of L-glutamic acid crystal is transferred to β crystal.
Inventors:
SAITO YOSHIKI
KODA TAKAYUKI
UEDA HIROSHI
SATO KAZUHIRO
KODA TAKAYUKI
UEDA HIROSHI
SATO KAZUHIRO
Application Number:
JP2001228882A
Publication Date:
February 13, 2003
Filing Date:
July 30, 2001
Export Citation:
Assignee:
AJINOMOTO KK
International Classes:
C07C227/42; C07C229/24; C12P13/14; (IPC1-7): C07C227/42; C07C229/24; C12P13/14
Domestic Patent References:
| JPS454730B1 | 1970-02-17 | |||
| JP45013806A | ||||
| JPS4610844B1 | 1971-03-19 | |||
| JPS454730B1 | 1970-02-17 | |||
| JPS4513806B1 | ||||
| JPS4610844B1 | 1971-03-19 |
Attorney, Agent or Firm:
Masao Shimokoshi (1 person outside)
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