Process for the recovery of .alpha.-hydroxy- and .alpha.-amino-carboxylic acids from sugar-containing media
US4288619A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1979 |
| Grant date | Sep 8, 1981 |
| Priority date | — |
| Expiry date | Aug 30, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P13/14
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The invention relates to a process for the recovery of .alpha.-hydroxy- and .alpha.-amino-carboxylic acids from sugary media containing them. According to the process of the invention: PA1 in a first phase, the mixture from which it is proposed to recover the .alpha.-hydroxy- or .alpha.-amino-carboxylic acid and which contains the latter in the form of its calcium salt is contacted with a cationic resin in the calcium form for a sufficient time to reach optimal adsorption of said calcium salt and then, PA1 in a second phase, the previously saturated resin is eluted by resorting to water. The process according to the invention enables the quantitative production of a pure calcium salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.