Title:
METHOD OF PURIFYING AND RECOVERING SWEETENER
Document Type and Number:
WIPO Patent Application WO/1999/014186
Kind Code:
A1
Abstract:
A method of purifying and recovering a sweetener efficiently in a high yield without conducting complicated steps, which comprises contacting crude methyl N-(3,3-dimethylbutyl)-$g(a)-L-aspartyl-L-phenylalaninate containing at least methyl $g(a)-L-aspartyl-L-phenylalaninate as an impurity with a mixed solvent having two layers respectively consisting of water and an organic solvent immiscible with water to extract the methyl N-(3,3-dimethylbutyl)-$g(a)-L-aspartyl-L-phenylalaninate with the organic solvent layer.
Inventors:
TAKEMOTO TADASHI (JP)
Application Number:
PCT/JP1998/003682
Publication Date:
March 25, 1999
Filing Date:
August 19, 1998
Export Citation:
Assignee:
AJINOMOTO KK (JP)
TAKEMOTO TADASHI (JP)
TAKEMOTO TADASHI (JP)
International Classes:
C07C231/24; C07C237/12; A23L27/30; C07K5/072; C07K5/075; C07C237/20; (IPC1-7): C07C237/12; C07C231/24
Domestic Patent References:
| WO1998032767A1 | 1998-07-30 | |||
| WO1994011391A1 | 1994-05-26 |
Other References:
See also references of EP 1020431A4
Attorney, Agent or Firm:
Ishida, Yasumasa (7th floor 20-12 Shin-Yokohama 3-chome Kohoku-ku, Yokohama-shi Kanagawa, JP)
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