A device suitable for adsorbing thaumatin-like proteins, Fe 2+ ions and Cu 2+ ions from wine and other vegetable beverages, comprising: - a tubular container filled internally at least partly with particles of a support material coated with a layer of mesoporous nanostructured adsorbent material comprising titanium oxide, the aforesaid layer having a thickness of between 10 and 25 μm and the aforesaid mesoporous nanostructured adsorbent material having pores of size between 15 and 50 nm, 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 (A') for the wine or other vegetable beverage, respectively positioned at the two ends of the tubular container, said inlet conduit and said outlet conduit (A') being in fluid communication with the internal volume of the tubular container; - a first closure element and a second closure element (B'), respectively positioned at the two ends of the tubular container, said conduits (A and A') passing through the closure elements (B and B'), wherein the first and the second closure elements (B and B') are adapted to occlude the respective end section of the tubular container and to prevent the escape of the mesoporous nanostructured adsorbent material contained therein; and - a first filtering element positioned in the outlet section of the inlet conduit into the tubular container and a second filtering element (D') positioned in the inlet section of the outlet conduit (A') from the tubular container, the first and the second filtering elements (D and D') being mesh filters having pores of dimensions adapted to retain inside the tubular container the aforesaid particles of support material coated with the aforesaid layer of mesoporous nanostructured adsorbent material. - a tubular container filled internally at least partly with particles of a support material coated with a layer of mesoporous nanostructured adsorbent material comprising titanium oxide, the aforesaid layer having a thickness of between 10 and 25 μm and the aforesaid mesoporous nanostructured adsorbent material having pores of size between 15 and 50 nm, 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 (A') for the wine or other vegetable beverage, respectively positioned at the two ends of the tubular container, said inlet conduit and said outlet conduit (A') being in fluid communication with the internal volume of the tubular container; - a first closure element and a second closure element (B'), respectively positioned at the two ends of the tubular container, said conduits (A and A') passing through the closure elements (B and B'), wherein the first and the second closure elements (B and B') are adapted to occlude the respective end section of the tubular container and to prevent the escape of the mesoporous nanostructured adsorbent material contained therein; and - a first filtering element positioned in the outlet section of the inlet conduit into the tubular container and a second filtering element (D') positioned in the inlet section of the outlet conduit (A') from the tubular container, the first and the second filtering elements (D and D') being mesh filters having pores of dimensions adapted to retain inside the tubular container the aforesaid particles of support material coated with the aforesaid layer of mesoporous nanostructured adsorbent material.