Preparation of D-malic acid or derivative
US4912042A · kind A · utility
2Cited by
16References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 17, 1989 |
| Grant date | Mar 27, 1990 |
| Priority date | — |
| Expiry date | Aug 17, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/874
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
D-malic acid is produced from D,L-malic acid by subjecting the racemate to the action of a microorganism or product thereof which assimilates L-malic acid but not D-malic acid, until the L-malic acid in the racemate is substantially consumed. D-malic acid recovered from the reaction mixture has a high degree of optical purity. Preferred microorganisms are bacteria such as Pseudomonas putida and Acinetobacter calcoaceticus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.