title: Synthesis and Evaluation of Chitosan-Vitamin C complex.
abstract: Chitosan is a biocompatible, biodegradable and non-toxic polysaccharide polymer. It dissolves in water only if the pH is lower than 6.5. To extend its range of application, many water-soluble derivatives have therefore been prepared. In this research, chitosan-vitamin C complex was synthesized and characterized with Fourier transformed infrared spectroscopy, differential scanning calorimetry and (1)H-NMR. The solubility of chitosan-vitamin C complex in distilled water was greatly improved. The *O(2) (-) scavenging activity of chitosan-vitamin C complex was compared with chitosan and vitamin C by measuring the auto-oxidation rate of pyrogallic acid. Results showed that the scavenging activity on *O(2) (-) by chitosan-vitamin C complex was stronger than that by CS. At low concentrations (< 0.05 mg/ml), the scavenging activity of chitosan-vitamin C complex was stronger than that of vitamin C, but after certain concentrations (>0.1mg/ml), its scavenging activity was lower than that of vitamin C.
authors.affiliation: School of Pharmacy, Shenyang Pharmaceutical University, 110016, Shenyang, China.
authors.forename: X L
authors.initials: XL
authors.lastname: Tian
authors.forename: D F
authors.initials: DF
authors.lastname: Tian
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Wang
authors.forename: F K
authors.initials: FK
authors.lastname: Mo