Method and apparatus for producing lactic acid
US8673600B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2012 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Dec 18, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12M47/10
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Disclosed is an apparatus and a method for producing lactic acid, wherein only lactic acid is selectively absorbed and separated from fermentation liquor using a lactic acid absorption resin and wherein a neutralizing agent is not used. The present invention does not include a neutralizing process and a process of converting lactate to lactic acid. The method comprises: adding and mixing a culture medium, microorganism and sugar in a fermenter; passing a fermentation liquor through a microorganism filtration unit to remove microorganisms; and selectively absorbing and separating lactic acid from filtered liquid using a lactic acid absorption resin. The apparatus includes a fermenter for lactic acid fermentation; a filtration unit for removing a microorganisms from the fermentation liquor; and a lactic acid absorption resin for selectively absorbing lactic acid from the filtered liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.