Lactic acid production method
US8349597B2 · kind B2 · utility
3Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2008 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Apr 29, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2311/2669
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of producing lactic acid by separating lactic acid produced in a culture solution by microbial fermentation, comprising: a step (A) of filtering the culture solution through a nano-filtration membrane; and a step (B) of distilling a lactic-acid-containing solution produced in step (A) under a pressure of 1 Pa to atmospheric pressure at a temperature of 25 to 200° C. to recover lactic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.