Process for isolating and purifying amino acids
US4956471A · kind A · utility
6Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 16, 1989 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | May 16, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D233/64
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for isolating and purifying an amino acid, which comprises subjecting an aqueous solution of said amino acid containing impurities composed mainly of at least one member selected from the group consisting of acidic amino acids, lysine, ornithine, citrulline, histidine, PCA, sulfate ions, chloride ions and pigments to ion-exclusion chromatography using a strongly acidic cation exchange resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.