Title:
PURIFICATION OF BRANCHED CHAIN AMINO ACID
Document Type and Number:
Japanese Patent JPH10237030
Kind Code:
A
Abstract:
To provide a simple method for purifying an amino acid selected from the group consisting of valine, leucine and isoleucine in a high purity and in a high yield by using an inexpensive precipitating agent.
This method for purifying a branched chain amino acid comprises treating an aqueous solution containing the amino acid selected from the group consisting of valine, leucine and isoleucine with p-ethylbenzene sulfonic acid or its water-soluble salt, separating the produced amino acid.p-ethylbenzene sulfonic acid salt crystals, and subsequently decomposing the salt. The p- ethylbenzene sulfonic acid may be its free acid, its alkali metal salt or its ammonium salt.
More Like This:
Inventors:
HASEGAWA KAZUHIRO
OKAMOTO YUTAKA
NAKAMURA TORU
KANEKO TETSUYA
SANO CHIAKI
IITANI KINZO
OKAMOTO YUTAKA
NAKAMURA TORU
KANEKO TETSUYA
SANO CHIAKI
IITANI KINZO
Application Number:
JP4198097A
Publication Date:
September 08, 1998
Filing Date:
February 26, 1997
Export Citation:
Assignee:
AJINOMOTO KK
International Classes:
C07C227/42; C07C229/08; (IPC1-7): C07C229/08; C07C227/42
Previous Patent: AROMATIC AMINE DERIVATIVE HAVING NOS-INHIBITING ACTION
Next Patent: METHANE SULFONATE OF CARNITINE DERIVATIVE
Next Patent: METHANE SULFONATE OF CARNITINE DERIVATIVE