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Chitosan (chitosan) N - chitin, chitin, chitosan and cellulose with similar chemical structures and hydroxyl groups on the cellulose in C2, chitin and chitosan on the C2 a respectively replaced by an amino and acetyl amino, chitin and chitosan has biodegradability, cell affinity and biological effects, such as many unique properties, especially with free amino groups of chitosan, is the only basic polysaccharide in natural polysaccharide.
The amino group in the molecular structure of chitosan is more reactive than the acetylamino group in the chitin molecule, which makes the polysaccharide have excellent biological function and can undergo chemical modification reaction.
Therefore, chitosan is considered as a functional biomaterial with greater application potential than cellulose.
Chitosan as natural polysaccharide chitin removal of acetyl products, has biodegradability, biocompatibility, non-toxic, antibacterial, anti-cancer, lipid, and enhance the immune and other physiological functions, widely used in food additives, textile, agriculture, environmental protection, beauty care, cosmetics, antibacterial agent, medical fiber, medical dressings, artificial tissue materials, drug carrier materials, gene transduction, biomedical field, medical absorbable materials, tissue engineering carrier materials, medical and drug development, and many other fields and other daily-use chemical industry.