Sodium carboxymethyl cellulose (CMC) is a kind of highly polymeric fiber ether obtained by chemical modification of natural cellulose. Its structure is mainly composed of D-glucose unit connected by β (1→4) glucoside bond. It is dissolved in cold water to form a viscous solution. The viscosity of the solution is related to the vitamin raw material DP (high, medium, low), and the concentration and dissolution conditions, for example: dissolving and applying high shear force to the solution, if the CMC is low DS, or the substitution distribution is uneven, then the gel aggregate is produced; Conversely, if the high DS and substitution are evenly distributed, a transparent and uniform solution is formed.
