CA1138799A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Method and apparatus for the preparation of a fermented beverage with reduced alcohol content
Assignee: Microdyn Modulbau GmbH and Co KG
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Filing: 1980-06-13
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Granted: 1983-01-04
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Expires: 2000-06-13
Abstract
Abstract ABSTRACT A method is described of producing a fermented drink having a reduced alcohol content. A fermented drink produced according to a conventional fermentation method is passed along a dialysis membrane at a pres-sure difference of less than 5.0 bars, while a dialy-sate liquid flows simultaneously on the other side of the dialysis membrane. The fermented drink may be subjected both to dialysis and to ultrafiltration. The dialysate liquid may contain extractive substances of the fermented drink, for example, the dialysate liquid may be a non-alcoholic, fermented drink which corresponds to the drink to be dialysed, the alcohol having been removed from the dialysate liquid by adsorption, extraction, reverse osmosis and/or distillation.
Inventors
- 👤 Werner Bandel
- 👤 Franz J. Schmitz
- 👤 Karl Ostertag
- 👤 Friedrich Garske
- 👤 Hans G. Breidohr
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-09 13:44
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/58; B01D61/24; B01D61/243; C; C12; C12H; C12H3/00; C12H3/04; B01D2311/00; B01D2311/06; B01D61/14; B01D61/145
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
52 words
A method of producing a fermented drink having a reduced alcohol content, wherein a fermented drink produced according to a conventional fermentation method is passed along a dialysis membrance at a pre-ssure difference of less than 5.0 bars, while a dialy-sate liquid flows simultaneously on the other side of the dialysis membrane.
Claim 2
Independent Claim
52 words
A method of producing a fermented drink having a reduced alcohol content, wherein a fermented drink produced according to a conventional fermentation method is passed along a dialysis membrance at a pre-ssure difference of less than 5.0 bars, while a dialy-sate liquid flows simultaneously on the other side of the dialysis membrane.
Claim 3
Dependent Claim
22 words
A method according to claim 1, wherein the pressure difference between the fermented drink and the dialysate is less than 1.0 bar.
Claim 4
Dependent Claim
22 words
A method according to claim 2, wherein the pressure difference between the fermented drink and the dialysate is less than 0.5 bar.
Claim 5
Dependent Claim
22 words
A method according to claim 3, wherein the pressure difference between the fermented drink and the dialysate is less than 0.1 bar.
Claim 6
Dependent Claim
18 words
A method according to claim 1, wherein the fermented drink is subjected both to dialysis and to ultrafiltration.
Claim 7
Dependent Claim
20 words
A method according to claim 5, wherein the ultrafiltration takes place in an ultrafiltration step separate from the dialysis step.
Claim 8
Dependent Claim
15 words
A method according to claim 6, wherein the separate ultrafiltration step follows the dialysis step.
Claim 9
Independent Claim
34 words
A method according to any one of claims 5 to 7, wherein the additional ultrafiltration is effected using a dialysis membrane at an ultrafiltration rate of from 7 to 30 ml/m2 h mm Hg.
Claim 10
Dependent Claim
24 words
A method according to claim 1, wherein the dialysis membrane has a low permeability for molecules having a molecular weight of more than 100.
Claim 11
Dependent Claim
17 words
A method according to claim 1, wherein the dialysate liquid contains extractive substances of the fermented drink.
Claim 12
Dependent Claim
23 words
A method according to claim 10 wherein the dialysate liquid is a non-alcoholic, fermented drink which corresponds to the drink to be dialysed.
Claim 13
Dependent Claim
26 words
A method according to claim 11, wherein the alcohol concentrated in the dialysate liquid is removed from the dialysate by adsorption, extraction, reverse osmosis and/or distillation.
Claim 14
Dependent Claim
20 words
A method according to claim 12, wherein the dialysate liquid freed from the alcohol is re-used as the dialysate liquid.
Claim 15
Independent Claim
38 words
A method according to claim l, wherein the fermented drink being dialysed contains carbon dioxide, and the pressure at which dialysis is carried out is above the saturation pressure of the carbon dioxide dissolved in the fermented drink.
Claim 16
Dependent Claim
30 words
A method according to claim 14, wherein the dialysate liquid contains a quantity of carbon dioxide corresponding to the quantity of carbon dioxide in the fermented drink to be dialysed.
Claim 17
Independent Claim
172 words
An apparatus for producing a fermented drink having a reduced alcohol content comprising a dialysis membrane; a housing receiving the membrane and defining a first chamber connected to a first supply pipe and a first removal pipe and a second chamber connected to a second supply pipe and a second removal pipe, the chambers being separated from each other by the membrane and by liquid-impermeable sealing elements and/or divid-ing walls; a transport unit connected to the first chamber and a transport unit connected to the second chamber, both adapted to work at a steady pressure; throughflow rate adjusting members positioned in the first and the second supply pipe and/or throughflow rate adjusting members positioned in the first and second removal pipe; a control member for adjusting a constant low pressure difference between the first and second chambers, a control member for adjusting any pressure level variation in the chambers; and a device for controlling the temperature of the liquid flowing through the first chamber and/or the liquid flowing through the second chamber.
Claim 18
Independent Claim
172 words
An apparatus for producing a fermented drink having a reduced alcohol content comprising a dialysis membrane; a housing receiving the membrane and defining a first chamber connected to a first supply pipe and a first removal pipe and a second chamber connected to a second supply pipe and a second removal pipe, the chambers being separated from each other by the membrane and by liquid-impermeable sealing elements and/or divid-ing walls; a transport unit connected to the first chamber and a transport unit connected to the second chamber, both adapted to work at a steady pressure; throughflow rate adjusting members positioned in the first and the second supply pipe and/or throughflow rate adjusting members positioned in the first and second removal pipe; a control member for adjusting a constant low pressure difference between the first and second chambers, a control member for adjusting any pressure level variation in the chambers; and a device for controlling the temperature of the liquid flowing through the first chamber and/or the liquid flowing through the second chamber.
Claim 19
Dependent Claim
17 words
An apparatus according to claim 16, wherein the transport units operate by static pressure without moving parts.
Claim 20
Dependent Claim
24 words
An apparatus according to claim 17, wherein at least one of the transport units is a liquid storage container charged with an inert gas.
Claim 21
Independent Claim
34 words
An apparatus according to any one of claims 16 to 18, wherein the membrane is in the form of a membrane module which is liquid-tight and connected to the housing in a detachable manner.
Claim 22
Dependent Claim
16 words
An apparatus according to claim 19, wherein a plurality of membrane modules are connected in paral-lel.
Claim 23
Dependent Claim
27 words
An apparatus according to claim 20, wherein the plurality of membrane modules are so mounted as to be individually exchangeable without interrupting the operation of the apparatus.
Claim 24
Dependent Claim
30 words
An apparatus according to claim 16, wherein at least in the first or second supply pipe and/or in the first or second removal pipe, a carbon dioxide-metering unit is installed.
References Cited (Backward Citations)
No citation records indexed.
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