Publish Time: 2022-12-05 Origin: Site
Sodium carboxymethyl cellulose (CMC-Na) is an organic substance with the chemical formula [C6H7O2(OH)2OCH2COONa], a carboxymethylated derivative of cellulose, the predominant ionic cellulose gum. CMC-Na is a white fibrous or granular powder, odorless and tasteless, hygroscopic, and easily dispersed in water to form a transparent colloidal solution.
The following is a list of contents:
Properties of sodium carboxymethyl cellulose
Functional properties in food applications
Sodium carboxymethyl cellulose, abbreviated as CMC-Na, is a white to light yellow powder, granular or fibrous substance that is highly hygroscopic, readily soluble in water, and highly viscous when in neutral or alkaline solutions. It is stable to drugs, light, and heat. However, it is restricted to heat to 80°C. When heated for a long time above 80°C, the viscosity decreases and it is insoluble in water. Its relative density is 1.60 and 1.59 for flakes. The refractive index is 1.515 brown when heated to 190-205°C and burnt when heated to 235-248°C. Its solubility in water depends on the degree of substitution. Insoluble in acids and alcohols, does not precipitate when exposed to salts. It is not easily fermentable, has great emulsifying power for fats and waxes, and can be stored for a long time.
Sodium carboxymethyl cellulose can emulsify and stabilize beverages containing fats, oils, and proteins. In general, beverages containing fats and oils are characterized by varying degrees of fat and a certain amount of protein, which tend to separate and float when stored, forming unattractive "collars" that affect the appearance of the product. In addition, proteins are prone to coagulation and separation, especially in products with low pH, where they are bound to coagulate. CMC-Na can effectively solve these problems as it dissolves in water in the form of a transparent and stable colloid, which stabilizes the proteins, while reducing the surface tension between the fat and water, allowing the fat to be fully emulsified. For this reason, CMC-Na is often used as a thickening agent in the food industry.
Sodium carboxymethyl cellulose has a hydrating effect and can be used in meat products, bread, buns, and other food products to improve the organization and make the water less volatile, which can improve product yield and increase the taste.
The thixotropy of sodium carboxymethyl cellulose refers to the fact that the macromolecular chains have a certain number of interactions and can easily form a three-dimensional structure. After the three-dimensional structure is formed, the apparent viscosity of the solution rises; after breaking the three-dimensional structure, the apparendensityty decreases. Thixotropy refers to the time-dependent change in apparendensityty. Thixotropic carboxymethyl cellulose is important for gel systems and can be used for jellies and jams.
Sodium carboxymethyl cellulose can form a film on the food surface, which can play a protective role for fruits and vegetables. Due to the existence of the film, low oxygen, and high carbon dioxide gas environment is formed between the film and the fruits and vegetables, which reduces the gas exchange rate and material exchange rate and is used to extend the shelf life of fruits and vegetables.
Sodium carboxymethyl cellulose also has other properties such as suspension and chemical stability, which also provide the basis for its wide application in the food industry. Our official website is www.jysunway.com. If you are interested in buying sodium carboxymethyl cellulose or if you are interested in learning about sodium carboxymethyl cellulose. You can visit our official website to learn more about our company, and you can also communicate with us on the website. We are ready to serve you. Our cost-effective products are deeply appreciated by everyone. We are looking forward to working with you.