METHOD AND DEVICE FOR PRESERVING WINE-CONTAINING LIQUIDS

Abstract

The invention relates to a method and a device for preserving wine-based beverages and to use of the device for this purpose.

Claims

1. Method for preserving a wine-based beverage, comprising a vessel (1), at least one line (2), by means of which the wine-based beverage is pumped from the vessel (1) using a pump (3), and at least one storage vessel (4) comprising at least one preservative, characterized in that the preservative is supplied to the wine-based beverage in the line (2) and this mixture is pumped into the same vessel (1).

2. Method according to claim 1, characterized in that the volume of the vessel is 100 l to 2000 l.

3. Method according to claim 2, characterized in that the volume of the vessel is 200 l to 300 l.

4. Method according to claim 1, characterized in that the line opening of the inlet (5), from which the mixture of preservatives and the wine-based beverage flows back into the vessel, and the line opening of the outlet (6) are both in the wine-based beverage.

5. Method according to claim 1, characterized in that the line opening of the inlet (5), from which the mixture of preservatives and wine-based beverage flows back into the vessel, and the line opening of the outlet (6), both of which are located in the wine-based beverage, are at a distance of at least 5 cm from each other, based on the distance between the centres of the openings of the lines.

6. Method according to claim 1, characterized in that dicarbonate diesters are contained as a preservative.

7. Method according to claim 1, characterized in that the preservative is dimethyl dicarbonate or diethyl dicarbonate.

8. Method according to claim 1, characterized in that 1 ppm to 250 ppm of the preservative is added based on the volume of the wine-based beverage.

9. Method according to claim 1, characterized in that the pump has a pumping capacity of 10 l/min to 50 l/min.

10. Method according to claim 1, characterized in that the pumping process is carried out for a period of 10 min to 15 min.

11. Method according to claim 1, characterized in that the liquid of the vessel is completely recirculated by the pump at least once.

12. Device for preserving a wine-based beverage, comprising a vessel (1), at least one line (2), at least one pump (3) and at least one storage vessel (4) comprising at least one preservative, characterized in that the preservative is supplied to the wine-based beverage in the line (2) and this mixture is pumped into the same vessel (1).

13. Device according to claim 12, characterized in that the injection is carried out from the storage vessel (4) into the line (2) by means of an injector (7).

14. Method according to claim 12, characterized in that the injector (7) is a Venturi nozzle.

15. Use of the device according to claim 12 for preserving wine and mixed wine beverages.

Description

[0032] The invention is explained in further detail in the following with reference to the figures, without limiting the general concept of the invention.

[0033] FIG. 1 shows a general structure of the device according to the invention.

[0034] FIG. 1 shows a device according to the invention for preserving a wine-based beverage, comprising a vessel (1), at least one line (2), into which the wine-based beverage is pumped from the vessel by means of a pump (3), and at least one storage vessel (4) comprising at least one preservative, characterized in that the preservative is supplied to the wine-based beverage and this mixture is again pumped into the same vessel (1).

[0035] Preferably, the preservative is added by means of an injector (7) from the storage vessel (4). Preferably, injection is carried out via a Venturi nozzle due to the negative pressure in the line (2) produced by the pump. In this case, therefore, the wine-based beverage and the preservative are thoroughly mixed via this nozzle.

[0036] FIG. 1 also shows the method for preserving a wine-based beverage, comprising a vessel (1), at least one line (2), by means of which the wine-based beverage is pumped from the vessel (1) by means of a pump (3), and at least one storage vessel (4) comprising at least one preservative, wherein the preservative is supplied to the wine-based beverage and this mixture is pumped into the same vessel (1).

[0037] In a further preferred embodiment of the invention, the method is carried out such that the line opening of the inlet (5), from which the mixture of preservatives and wine-based beverage flows back into the vessel, and the line opening of the outlet (6) are both located in the wine-based beverage.

[0038] In a further preferred embodiment of the invention, the method is carried out such that the line opening of the inlet (5), from which the mixture of preservatives and wine-based beverage flows back into the vessel, and the line opening of the outlet (6), both of which are located in the wine-based beverage, are at a distance of at least 5 cm from each other, based on the distance between the centres of the openings of the lines.

[0039] The device according to the invention makes it possible to efficiently treat wine-based beverages in vessels, in particular with a high volume, such as e.g. in tanks or casks, against contamination by microorganisms. Technically complex systems can be dispensed with, thus allowing the preservation process to be carried out more economically. In addition, the loss of wine-based beverages ordinarily occurring during refilling of the wine-based beverage into a second vessel can be reduced. This increases the yield of wine-containing beverages to be treated during preservation. In addition, at least equivalent mixing with the preservatives can be achieved by means of the device according to the invention and the method according to the invention.

EXAMPLE

Example 1

[0040] The device according to FIG. 1 was used. An ALM-40 from the firm Tellarini, Ravenna, Italy was used as a pump. The pump was connected with flexible hoses to the inlets and outlets of the lines. A T-piece was installed in the hose upstream of the pump, allowing the dimethyl dicarbonate to be aspirated in.

[0041] The tube was inserted into the bung hole of a barrique cask, and the space between the tube and the bung hole was sealed with an elastomeric sealant. The distance between the line opening of the inlet, from which the mixture of preservatives and the wine-based beverage flows back into the vessel, and the line opening of the outlet, both of which are located in the wine-based beverage, was 15 cm. The above-described device was used to recirculate 225 l of wine in a barrique cask (volume 225 l) for 10 min. Wine: Alde Gott Vineyard, 2014 Pinot Noir, quality sweet red wine, Baden, with 10.0% alcohol. During the pumping process, the indicated amount of dimethyl dicarbonate (DMDC) was added. 3 samples of the wine (50 ml) were then taken in each case, and after a hydrolysis period of 10 h, the additional amount of MeOH was compared to a blind sample. The methanol content of the wine before dosage was 107 ppm of MeOH.

[0042] 48 ppm of MeOH is formed from 100 ppm DMDC after hydrolysis.

TABLE-US-00001 TABLE 1 Dosage of DMDC Calculated Density (DMDC): amount Measured amount of MeOH 1.25 g/ml of MeOH Sample 1 Sample 2 Sample 3 18 ml (100 ppm) 48 ppm 46 ppm 49 ppm 47 ppm 36 ml (200 ppm) 96 ppm 95 ppm 95 ppm 94 ppm

[0043] The results confirm uniform introduction and thorough mixing of the wine-based beverages with dimethyl dicarbonate.