Wine type
White
Rose
Sparkling
5% carboxymethylcellulose solution.
100–400 ml/hl in white, rosé, and sparkling wines.
Preliminary laboratory tests are strongly recommended.
Warning: maximum legal dose 400 ml/hl.
100 ml/hl provides 3 mg/L of SO2.
The dose of CMC Liquid 5 should be added while stirring or with a venturi tube, taking care to homogenize all the product in the mass.
It is recommended that CMC Liquid 5 be added at least 48 hours before the last filtration.
Care is recommended when using CMC Liquid 5 on wines with suspected protein or color matrix instabilities.
1 kg bottle, 5, 10 and 25 kg canister, 1100 kg BIG.
Store the product in a cool and dry place.
In case of partial use, re-seal thoroughly before storing under the specified conditions.
5% carboxymethylcellulose solution.
100–400 ml/hl in white, rosé, and sparkling wines.
Preliminary laboratory tests are strongly recommended.
Warning: maximum legal dose 400 ml/hl.
100 ml/hl provides 3 mg/L of SO2.
The dose of CMC Liquid 5 should be added while stirring or with a venturi tube, taking care to homogenize all the product in the mass.
It is recommended that CMC Liquid 5 be added at least 48 hours before the last filtration.
Care is recommended when using CMC Liquid 5 on wines with suspected protein or color matrix instabilities.
1 kg bottle, 5, 10 and 25 kg canister, 1100 kg BIG.
Store the product in a cool and dry place.
In case of partial use, re-seal thoroughly before storing under the specified conditions.
Optimization of tartaric stability: the effectiveness of 5% CMC Liquid
Tartaric stability is one of the main challenges in winemaking, as it directly affects the quality and integrity of the wine. The formation of potassium tartrate (KHT) or calcium tartrate (CaT) crystals is a natural phenomenon which, if not properly managed, can compromise the aesthetic appearance of the wine and alter its sensory perception. For this reason, tartaric stabilization is essential to prevent the precipitation of these salts, while maintaining the harmony and organoleptic balance of the product. The technologies used must be carefully selected so that the intervention does not compromise the naturalness of the wine.
We have addressed this challenge by selecting a CMC with a high degree of substitution (DS 0.90), characterized by a greater number of cationic anchoring sites that increase its effectiveness as a protective colloid. Its action is based on the interaction between charges: being negatively charged at the pH of the wine, CMC competes with the positive ions of potassium bitartrate, preventing their growth and subsequent precipitation.
To evaluate the effectiveness of CMC, a duplicate test was conducted on a Pecorino white wine, vintage 2023, from the province of Chieti (Abruzzo).
Stabilization treatments were carried out with two types of liquid CMC, at 5% and 10% respectively, both dosed at 100 ml/hl, according to the maximum allowed by the OIV. The aim was to demonstrate how the raw material is a crucial factor: in fact, as we will see, Essedielle Liquid CMC at 5% guaranteed high wine stability.
Tartaric stability was measured using the mini-contact test, which evaluates the variation in electrical conductivity (Δx). A value below 30 indicates high stability, between 30 and 50 acceptable stability, between 50 and 70 a critical level, while above 70 the wine is considered unstable.
Effect of the two CMCs on tartaric stability in a white wine. Untreated white wine (C), 5% CMC solution (CMC 1), 10% CMC solution (CMC 2).
At the end of the treatment, the results showed a significant reduction in electrical conductivity in both treated samples, without the 10% CMC providing additional benefits compared to the 5% CMC Liquid essedielle.
To further the analysis, the potassium index, a key parameter for the effectiveness of CMC in tartaric stabilization, was also evaluated. In particular, the low potassium content (10 mg/100 g) proved to be a key factor in ensuring greater stability.
Analysis of the structure and activity of CMC Liquid essedielle confirms that its high degree of substitution, low potassium content, and optimal distribution of carboxylic acid groups allow it to act effectively as a protective colloid, similar to other adjuvants such as metatartaric acid and mannoproteins.
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