Preparation and antibacterial property of low molecular weight chitosan quaternary ammonium salt

CHENG Guojun; CHEN Shuiping; WU Guozhong; LIN Baofeng; ZHONG Lei

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Preparation and antibacterial property of low molecular weight chitosan quaternary ammonium salt

更新时间：2023-03-30

- Preparation and antibacterial property of low molecular weight chitosan quaternary ammonium salt
- Journal of Radiation Research and Radiation Processing Vol. 25, Issue 3, Pages: 137-140(2007)
- 作者机构：
  
  1.中国科学院上海应用物理研究所　上海　201800
  2.广西大学化学化工学院　南宁　530004
  3.安徽理工大学材料科学与工程系　淮南　232001
- 作者简介：
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CHENG Guojun, CHEN Shuiping, WU Guozhong, et al. Preparation and antibacterial property of low molecular weight chitosan quaternary ammonium salt. [J]. Journal of Radiation Research and Radiation Processing 25(3):137-140(2007)
DOI：

CHENG Guojun, CHEN Shuiping, WU Guozhong, et al. Preparation and antibacterial property of low molecular weight chitosan quaternary ammonium salt. [J]. Journal of Radiation Research and Radiation Processing 25(3):137-140(2007) DOI：

摘要

通过γ射线辐照壳聚糖降解，得到低分子量壳聚糖，并采用环氧丙基三甲基氯化铵对低分子量壳聚糖进行季铵化改性，制备了低分子量壳聚糖季铵盐，并测试其抗菌性。用傅立叶变换红外光谱（Fourier transform infrared spectroscopy，FT-IR）和核磁共振碳谱（,13,C Nuclear magnetic resonance，,13,C NMR）表征壳聚糖和壳聚糖季铵盐的结构，结果表明，经γ射线辐照过的壳聚糖，其季铵盐的取代度比未辐照的高，对大肠杆菌和金黄色葡萄球菌的抗菌效果也得到明显改善，γ射线辐照没有破坏壳聚糖的分子结构。

Abstract

Low molecular weight chitosan, product of γ-ray degradation, was modified by introducing glycidyl trimethyl ammonium chloride group and its antibacterial property was tested against different bacteria. The structure of chitosan and chitosan quaternary ammonium salt are characterized by FT-IR and ,13,C NMR. The results showed that the degree of substitution of the quaternary ammonium salt of chitosan with γ-ray irradiation was higher than original and its antibacterial effect to Escherichia coli and Staphylococcus aureate was also improved obviously, and molecular structure of chitosan wasn’t destroyed by γ-ray.

关键词

壳聚糖辐照降解壳聚糖季铵盐抗菌性

Keywords

ChitosanRadiation degradationChitosan quaternary ammonium saltAntibacterial property

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