期刊
CARBOHYDRATE POLYMERS
卷 208, 期 -, 页码 477-485出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2018.12.097
关键词
Chitosan; Quaternary pyridinium compounds; Antibacterial activity; Antioxidant activity
资金
- Lorestan University
Chitosan is an antibacterial biopolymer and conjugation of it with other antimicrobial agents can be a valuable method to improve the potential application of the resultant materials in the various industries such as cosmetics, food and packaging materials. In this work, a series of quaternary pyridinium compounds were synthesized; then to achieve developed biological properties, they were attached to the chitosan and chitosan nanoparticles. The formation of chitosan derivatives was evinced by FT-IR, H-1 and C-13 NMR, UV-vis and EDX spectroscopy. The morphology of samples was detected by FE-SEM, TEM and AFM images. The QAC-chitosan hybrids were investigated for antibacterial activity against two Gram-positive and two Gram-negative bacteria, and they showed a significant effect on the Gram-positive bacteria. DPPH-radical scavenging assay shows mild improvement in antioxidant activity of new chitosan derivatives.
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