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Synthesis and antimicrobial activity of Schiff base of chitosan and acylated chitosan
Author(s) -
Wang Jiangtao,
Lian Ziru,
Wang Hedong,
Jin Xiaoxiao,
Liu Yajuan
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.34997
Subject(s) - chitosan , chitin , antimicrobial , schiff base , biopolymer , aspergillus niger , chemistry , antibacterial activity , fourier transform infrared spectroscopy , nuclear chemistry , staphylococcus aureus , polymer chemistry , organic chemistry , polymer , chemical engineering , biochemistry , bacteria , biology , engineering , genetics
Chitosan, a biocompatible, biodegradable, nontoxic polymer, is prepared from chitin, which is the second most naturally occurring biopolymer after cellulose. Schiff base of chitosan, sorbyl chitosan, and p ‐aminobenzoyl chitosan were synthesized working under high‐intensity ultrasound and their antimicrobial properties were analyzed against Escherichia coli , Staphylococcus aureus , and Aspergillus niger . The structures of the derivatives were characterized by FTIR spectroscopy and elemental analysis. The results of antimicrobial activities indicated that the antimicrobial activities of the derivatives increased with increasing the concentration. The antibacterial activity of schiff base of chitosan against E. coli was stronger, while acylated chitosan had better inhiting effect on S. aureus than others. It was also found that the antifungal activities of the derivatives were stronger than that of chitosan, and schiff base of chitosan was obviously superior to acylated chitosan. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012