Production of low-ethanol beverage by membrane extraction
US4933198A · kind A · utility
Inventors
Key dates
| Filing date | Jan 12, 1989 |
| Grant date | Jun 12, 1990 |
| Priority date | — |
| Expiry date | Jan 12, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12H3/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Low-ethanol wines, beer, distilled spirits, and other alcoholic beverages are produced by treating ordinary alcoholic beverages with novel membrane extraction methods. Semipermeable membranes and gas-phase extraction fluids are employed to selectively extract ethanol into the gas-phase, while leaving substantially intact the complement of other organic constituents that contribute to the color, aroma, and taste of the beverage. Methods are provided for balancing the water activity of the gas-phase extraction fluid about equal to that in the beverage, so as to inhibit water transport across the membrane independent of the ethanol/water selectivity of the membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.