VINOPROTECT®: the use of CMC on rosé wines is authorised again from 08/02/2022 by the OIV.

Carboxymethylcellulose (E466) is a derivative of cellulose gum extracted from wood designed for tartaric stabilization. This protective colloid has a dual action, inhibiting the nucleation and growth of potassium bitartrate crystals. The risk of tartar precipitation at the pH and T°C of the wine is greatly reduced, which ensures tartaric stabilisation.

The quality and efficiency of CMC depends on 2 factors:

• The degree of substitution (DS) expresses the solubility of the gum and thus its effectiveness. The higher the solubility, the more the CMC interacts with wine and blocks the development of tartar crystals.
• The degree of polymerisation (DP) reflects the viscosity of the gum. The lower it is, the easier it is to incorporate the product into the wine, which means a time saving for the operator.

VinoProtect® is designed to offer the best compromise between solubility and efficiency!

For more informations, read our guidelines on CMC and the protocol of practical use.

The document is also available in the protocols section of the Technical-tools menu.