Production of isoflavone enriched fractions from soy protein extracts
US6565912B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2000 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Oct 26, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D311/36
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The temperature sensitive differential of solubilities of various isoflavone fractions is used to initially separate the fractions, preferably by heating an aqueous soy molasses or soy whey feed stream. The temperature of the feed stream is selected according to the temperature at which a desired isoflavone fraction or fractions become soluble. Then, the heated feed stream is passed through an ultrafiltration membrane in order to concentrate the isoflavones. The feed stream is put through a resin adsorption process. The isoflavone fractions are treated with either reverse osmosis or ultrafiltration (or both) to complete a solvent removal and to achieve a higher isoflavone concentration in the end product. Then, the feed stream is dried, preferably by spray drying, to produce dry particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.