Process of purifying methionine
US10669233B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Mar 19, 2019 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Mar 19, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C323/58
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides a process for purifying methionine. A methionine product having a purity of up to 99% or higher is obtained by separating methionine from a salt by-product through a process comprising adsorption and desorption using a macroporous adsorption resin, where the methionine content in the salt by-product is ≤0.03%. The yield of methionine extracted with the resin is up to 98% or higher. By using the process of the present invention, the existing production process is simplified, the quality of the methionine product is improved, and the production costs for methionine are reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.