MENG Xiao-rong1, ZHANG Min1,2*, ZHAO Ya-juan1, HU Xing-ting1
(1 College of Science, Xi′an University of Architecture and Technology, Xi′an 710055, Shaanxi China; 2 College of Chemistry and chemical engineering, Shaanxi University of Science and Technology, Xianyang 710027, Shaanxi, China)
Abstract:
The carboxymethylation of chitosan(CMCTS)， succinication of Chitosan(SU-CTS) and hydroxypropylation of chitosan(HP-CTS) were prepared. The structures of these materials were characterized by the FTIR. Their physico-chemical properties including the molecular weight, substitution, hygroscopicity and consistency were determined. Employed the Staphylococcus aureus and E.coli as testee, the CTS and their derivatives were respectively used to compare antibiotic activity. The result indicated that comparison with CTS, their derivatives antibacterial capability was enhanced, in which the CMCTS and SU-CTS have the higher antibacterial capability. The HP-CTS had the best capability in moisture absorption-retention activity. The ability in enhancing the consistency was related to the chemical composition and molecular weight of CTS and chitosan derivatives.
KeyWords:
chitosan; water-solubility derivatives; bacteriostatic; physico-chemical properties
