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The Role Of Dextran

Dextran is one of the bacterial polysaccharides, also known as dextran, which is a bacterium that is cultured in a sucrose solution [Leuconostoc mesentero-des, dextran bacterium (L. dextranicum)] Sucrose catalyzes the following reaction to produce: n sucrose → dextran + n fructose. In the Gluconobacter ox-ydans subsp. industrius [formerly known as Acetobacter viscosum and A. capsulatum], Dextrin synthesizes dextran. There are many types of dextran, which are composed only of D-glucose, and the main chain is an α(1,6) bond, and also has a branch of α(1,4) or α(1,3) bond. Glucose is a white powder that adds a little bit of water to produce a strong right-handedness. It is used as a substitute plasma in medicine.

Glucan is a generic term for polysaccharides in which glucose is a constituent sugar. D-glucose residues are classified into a variety of types depending on the binding mode of each other, and are widely distributed in microorganisms, plants, and animal kingdoms. Among them, there are bacterial polyglucose (the side chain of α-1,4 and α-1,6 bonds is paid from the main chain of α-1,6 bond), and the seaweed polysaccharide of brown algae (Lami- Nalin) (mainly β-1,3-bond), lignin of lichens (β-1,4 and β-1,3 linkages), cellulose of higher plants, (β-1,4-binding) ), amylose (α-1, 4 bond), amylopectin (a side chain of α-1, 6 bonds on the main chain of α-1, 4 bonds), glycogen of animals, and the like.