Carboxymethyl cellulose is synthesized by the alkali-catalyzed reaction of cellulose with chloroacetic acid.The functional properties of CMC depend on the degree of substitution of the cellulose structure.CMC is used in food science as a viscosity modifier or thickener, and to stabilize emulsions in various products including ice cream.
As a food additives, it has E number E466. It is also a constituent of many non-food products.CMC is used as a lubricant in non-volatile eye drops.This product is the so-called Technical CMC which is used in detergents.Poly-anionic cellulose or PAC is derived from CMC and is also used in oilfield practice.Presumably the level of derivatization is much lower so that the solubility properties of microgranular cellulose are retained while adding sufficient negative charged carboxylate groups to bind positively charged proteins.
CMC is white or yellowish powder, granular or fibrous solids, odorless, tasteless, non-toxic. CMC has the thickening, dispersion, suspension, adhesion, film, protective colloid and the protection of water quality such as performance.CMC is a chemical molecule can be swelling. CMC can be stored for a long time under dry environment.CMC is used as mold adhesive for plasticity improvement.Excellent water retention even at low concentration.
These groups form many hydrogen bonds among adjacent chains, regularly packing the chains together to form stable crystalline regions and giving a complete insolubility in water and in most of the organic solvents.The first step is the treatment of the cellulose with caustic soda to break the crystalline clusters and obtain the alkali-cellulose complex, a substrate accessible to following reactions.Varying both the length of the polymer backbone and the number of substitutive carboxylic derivative a wide range of CMC grades are manufactured, providing different levels of viscosity and tuning the several properties of the polymer.
Other food additives: Echinacea Extract Acesulfame-K
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