Method for manufacturing fumaric acid
US10844408B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Dec 22, 2016 |
| Grant date | Nov 24, 2020 |
| Priority date | — |
| Expiry date | Jan 30, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/43
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a novel method for manufacturing fumaric acid having favorable tone of color. A method for manufacturing fumaric acid, comprising the following steps (1) and (2): (1) a step of culturing a microorganism having fumaric acid-producing ability in a liquid culture medium comprising a carbon source to obtain one or more substances selected from fumaric acid and a fumarate, (2) a step of crystallizing the one or more substances selected from fumaric acid and a fumarate obtained in the step (1) in the presence of one or more surfactants selected from a nonionic surfactant and an amphoteric surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.