CMC

Abbreviation for the polysaccharide carboxymethyl cellulose (also known as cellulose gum). The substance is used in detergents as a dirt carrier, in the pharmaceutical industry as a coating agent, and in the food industry as a thickening agent and water retention system. In viticulture, CMC has been approved as an agent in winemaking for all types of wine since 1 August 2009 under the new EU wine market regulation. It is used for crystal stabilization. CMC accumulates on the surface of dissolved tartar and thus prevents crystal growth. The first trials were carried out in the early 1980s. A recommendation of the OIV initiated the recognition under wine law. The agent is obtained from plant fibres. The quantity is limited to a maximum of 10 g/hl, the application can be in powder, granulate or viscous liquid form. The latter is best soluble in wine. CMC has a similar effect to metatartaric acid, but has the advantage over the latter that it is insensitive to temperature and is also effective in warm conditions.

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CMC

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