Method for the preparation of alcohol-free wine
AssigneeSchweizerische Eidgenossenschaft
InventorsUlrich Schobinger, Robert Waldvogel, Peter Durr
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Abstract
There is disclosed a method for preparing an alcohol-free wine product. A completely fermented wine is evaporated to produce a dealcholized wine concentrate and a vapor condensate containing alcohol and aromatic substances. The condensate is separated into a fraction comprising alcohol and aromatic substances. The aromatic substances are mixed with dealcoholized wine concentrate, fruit juice concentrate, fruit juice or water to produce an alcohol-free wine product.
Claims7
A method for the manufacture of alcohol-free wine product having a remaining alcohol content of less than 5 g/Kg using a concentrating plant and a separate counter-current distillation column having a head and at least forty theoretical plates including the steps of
- first evaporating between 30-60% of a completely fermented wine in said concentrating plant to produce a de-alcoholized wine concentrate and a vapor condensate containing alcohol and aromatic substances,
- then feeding said condensate to a supply location in the middle third of said column to separate said condensate into a fraction comprising alcohol and aromatic substances within the boiling range of 77.degree. to 97.degree. C.
- withdrawing said fraction comprising alcohol from said column at a location above said supply location,
- withdrawing said aromatic substances at a location below said supply location,
- mixing together said aromatic substances, said dealcoholized wine or fruit juice concentrate, dearomatized grape juice or fruit juice and mineral-free or distilled water,
- impregnating the resultant mixture with carbon dioxide,
- stabilizing said alcohol-free wine product against microbiological spoilage and
- adding anti-oxidants so as to yield said alcohol-free wine product ready for consumption.
Dependencies are inferred from the claim text.