Process for purifying phenylalanine
US5071560A · kind A · utility
8Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1990 |
| Grant date | Dec 10, 1991 |
| Priority date | — |
| Expiry date | Dec 19, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D15/327
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the liquid phase adsorptive separation of phenylalanine from a fermentation broth containing phenylalanine salts, carbohydrates, amino acids and organic acids. The feed is contacted, at a pH of 4.5-6.5, with a hydrophobic polar, porous synthetic adsorbent, such as Amberlite XAD-7, whose functional groups have a dipole moment of 1.6-2.0, to selectively adsorb the phenylalanine onto said adsorbent to the substantial exclusion of the other feed components and recovering phenylalanine by desorbing with water, an alcohol, a ketone or an ester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.