Ion Exchange Resins
Ion exchange by means of charged resin column equipment has been around for decades as a method to stabilise wines. Ion exchange resins are permitted for use in grape wine in over 40 countries worldwide.
Ion exchange is the reversible exchange of ions between a liquid and a solid, during the course of which the solid does not undergo any substantial changes. When this technique is applied to wine, the solid is an insoluble, permeable synthetic resin capable of exchanging ions with the wine with which it is in contact. These resins are used in the tartaric stabilisation of wine. For further substance information, please see the International Oenological Codex.
Synonym(s): Ion Exchange Polymer
CAS Number: Not available at this time
E Number: Not available at this time
INS Number: Not available at this time
International Organisations
Codex Alimentarius
-Food Category, Functional Class and Recommended Usage is not available at this time.
International Organisation of Vine and Wine (OIV)
-Food Category Wine (grape) Functional Class Stabliser Recommended Usage (International Code of Oenological Practices – Annex: Maximum Acceptable Limits) Not provided
FIVS
Classification Category 3 – Not naturally occurring in grapes and insignificant treatment residual in wine
Recommended Usage
Not available at this time.
As outlined in the OIV’s International Code of Oenological Practices, Ion Exchange Resins is used:
Ion exchange is the reversible exchange of ions between a liquid and a solid, during the course of which the solid does not undergo any substantial changes. When this technique is applied to wine, the solid is an insoluble, permeable synthetic resin capable of exchanging ions with the wine with which it is in contact. These resins are used in the tartaric stabilization of wine.
Usage in Winemaking:
Ion exchange by means of charged resin column equipment has been around for decades as a method to stabilise wines. It is mainly used by large-scale producers, but can work in a small-production and premium wine context as well. The ion exchange treatment consists of passing the wine through a column containing resin in cationic or anionic form. In cation form, the resin may be charged with sodium (Na+) or hydrogen (H+), or a mixture of Na+ and H+. When the wine is treated with cationic resin in sodium form, the Na+ of the resin is exchanged with K
See FIVS technical papers for more information - click here.
