The main component of microcrystalline cellulose is linear polysaccharide bound by β- 1, 4- glycosidic bond. It is a white, odorless and tasteless crystalline powder, which consists of extremely fine short rod-shaped or powdery porous particles. When natural cellulose is hydrolyzed by dilute acid to the limit degree of polymerization (LODP), these particles can flow freely.
Microcrystalline cellulose (MCC) accounts for about 70% of general plant fiber, and the other 30% is amorphous. Microcrystalline cellulose is widely used in medicine, cosmetics, food and other industries. Different particle size and water content have different characteristics and application scope.
Characteristics of monitoring center
Microcrystalline cellulose can stabilize foams and emulsions, especially during high-temperature processing; Forming gel with ointment-like texture; Improve the heat resistance of pectin and starch gel; Improve adhesion; Replace fat and oil to control the growth of ice crystals. The reason why microcrystalline cellulose can stabilize emulsion and foam is that microcrystalline cellulose is adsorbed on the interface, which strengthens the interface film. Microcrystalline cellulose is a common ingredient in low-fat ice cream and other frozen dessert products.
At present, the production of microcrystalline cellulose at home and abroad is based on natural cellulose, mainly including cotton linter, rice husk, pine needle, hemp stalk, Indian bamboo, orange peel, jute and so on.
Microcrystalline cellulose is mainly prepared by acid hydrolysis. Although the raw materials are different and the properties of the products are different, the main preparation principles and methods are the same, that is, cellulose purification, acidolysis, washing, drying, crushing and other processes are adopted. The particle size and distribution of microcrystalline cellulose depend on raw material structure, acid concentration, temperature, time, hydrolysis process and mechanical treatment degree.
The above contents refer to Baidu Encyclopedia-Microcrystalline Cellulose.