Device and method for stabilizing wine and other vegetable beverages
A device and a method for stabilizing wine or other vegetable beverages by removal, in whole or in part, of agents responsible for instability, including proteins and metals, are provided. The device has a tubular container filled internally at least partly with particles of support material covered with a layer of a mesoporous nanostructured adsorbent material comprising titanium oxide, adapted to absorb proteins and metals.
1. A device for stabilizing wine and other vegetable beverages, the device comprising:
a tubular container filled internally at least partly with particles of support material coated with a layer of mesoporous nanostructured adsorbent material comprising titanium oxide, the layer having a thickness between 10 and 25 μm and the mesoporous nanostructured adsorbent material having pores of size between 15 and 50 nm, BET surface area between 90 and 100 m 2 /g and absorbent volume of the pores between 0.4 and 0.5 cm 3 /g;
an inlet conduit and an outlet conduit for a beverage to be stabilized, respectively positioned at the two ends of the tubular container, said inlet conduit and said outlet conduit being in fluid communication with the internal volume of the tubular container;
a first closure element and a second closure element, respectively positioned at the two ends of the tubular container, said inlet and outlet conduits passing through the first and second closure elements, wherein the first and the second closure elements are adapted to occlude a respective end section of the tubular container and to prevent escaping of the mesoporous nanostructured adsorbent material contained therein; and
a first filtering element positioned in an outlet section of the inlet conduit into the tubular container and a second filtering element positioned in an inlet section of the outlet conduit from the tubular container, the first and the second filtering elements having pores of dimensions adapted to retain inside the tubular container the particles of support material coated with the layer of mesoporous nanostructured adsorbent material.
2. The device according to claim 1 , wherein the particles of support material are glass spheres or flakes, having size ranging from 1 to 10 mm.
3. The device according to claim 1 , wherein the tubular container is made of stainless steel, glass or food-grade plastics.
4. The device according to claim 1 , further comprising respective sealing gaskets applied at an interface between the tubular container and the first and second closure elements.
5. The device according to claim 1 , wherein the inlet conduit and the outlet conduit are mutually connected in a closed loop.
6. A method for adsorbing proteins and/or metals from wine or other vegetable beverages, the method comprising at least one adsorption step wherein wine or other vegetable beverages is/are made to flow through a device comprising:
a tubular container filled internally at least partly with particles of support material coated with a layer of mesoporous nanostructured adsorbent material comprising titanium oxide, the layer having a thickness between 10 and 25 μm and the mesoporous nanostructured adsorbent material having pores of size between 15 and 50 nm, BET surface area between 90 and 100 m 2 /g and absorbent volume of the pores between 0.4 and 0.5 cm 3 /g;
an inlet conduit and an outlet conduit for a beverage to be stabilized, respectively positioned at the two ends of the tubular container, said inlet conduit and said outlet conduit being in fluid communication with the internal volume of the tubular container;
a first closure element and a second closure element, respectively positioned at the two ends of the tubular container, said inlet and outlet conduits passing through the first and second closure elements, wherein the first and the second closure elements are adapted to occlude a respective end section of the tubular container and to prevent escaping of the mesoporous nanostructured adsorbent material contained therein; and
a first filtering element positioned in an outlet section of the inlet conduit into the tubular container and a second filtering element positioned in an inlet section of the outlet conduit from the tubular container, the first and the second filtering elements having pores of dimensions adapted to retain inside the tubular container the particles of support material coated with the layer of mesoporous nanostructured adsorbent material,
to obtain adsorption of the of proteins and/or metals on the mesoporous nanostructured adsorbent material.
7. The method according to claim 6 , further comprising one or more additional adsorption steps, wherein wine or other vegetable beverages is/are recirculated through the device.
8. The method according to claim 6 , further comprising a washing step of the mesoporous nanostructured adsorbent material.
9. The method according to claim 8 , wherein the washing step is carried out at the end of one or more adsorption steps or between two successive adsorption steps.
10. The method according to claim 6 , wherein the proteins comprise chitinase and thaumatin-like proteins and the metals comprise copper, iron and/or manganese.