Process for the production of hulupones
US3977953A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1975 |
| Grant date | Aug 31, 1976 |
| Priority date | — |
| Expiry date | Sep 3, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12C9/025
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
Lupulones, which form a constituent of hop resins which have hitherto been separated and discarded because of their poor solubility, are converted into a hulupone-containing beer-soluble bitter-tasting product by photo-sensitized oxidation in a liquid alkaline medium. However, the oxidation, which is effected by means of oxygen or an oxygen-containing gas in the presence of one or more sensitizing dyes and under the action of visible light, is only partial; it is discontinued when the oxygen consumption resulting from the reaction exhibits a substantial decline, or when the fall in pH occurring during the reaction substantially ceases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.