Lactic acid production method
US8759045B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Dec 7, 2012 |
| Grant date | Jun 24, 2014 |
| Priority date | — |
| Expiry date | Dec 7, 2032 |
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 (inclusive) at a temperature of 25 to 200° C. (inclusive) to recover lactic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.