食品科学 ›› 2011, Vol. 32 ›› Issue (9): 79-81.doi: 10.7506/spkx1002-6630-201109018

• 基础研究 • 上一篇    下一篇

O-羧甲基化壳聚糖季铵盐的制备及抑菌活性

李小芳,冯小强,杨 声,马治军,徐本锦   

  1. 天水师范学院生命科学与化学学院
  • 出版日期:2011-05-15 发布日期:2011-04-11
  • 基金资助:
    甘肃天水师范学院物理无机化学重点学科基金资助项目(ZD0840)

Preparation and Antibacterial Activity of Water-soluble O-Carboxymethyl Chitosan Quaternary Ammonium Salt

LI Xiao-fang,FENG Xiao-qiang,YANG Sheng,MA Zhi-jun,XU Ben-jin   

  1. College of Life Science and Chemistry, Tianshui Normal University, Tianshui 741001, China
  • Online:2011-05-15 Published:2011-04-11

摘要: 目的:制备抑菌活性较壳聚糖强的水溶性壳聚糖衍生物。方法:以3-氯-2-羟丙基三甲基氯化铵(CTA)和氯乙酸为接枝改性剂,制备水溶性O-羧甲基化壳聚糖季铵盐,采用红外光谱和紫外光谱对其结构进行表征,并研究O-羧甲基化壳聚糖季铵盐对大肠杆菌(E.coli)、金黄色葡萄球菌(S.aureus)和黑曲霉(A.niger)的抑制作用。结果:水溶性的O-羧甲基化壳聚糖季铵盐对E.coli、S.aureus和A.niger均有显著的抑菌活性。结论:与壳聚糖相比,水溶性的O-羧甲基化壳聚糖季铵盐的抑菌活性提高。

关键词: 壳聚糖, 羧甲基, 季铵盐, 抑菌, BSA

Abstract: Objective: To prepare and structurally characterize water-soluble O-carboxymethyl chitosan quaternary ammonium salt (CMCQAS), and to evaluate its antibacterial activity. Method: The preparation of water-soluble CMCQAS was conducted by using 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (CTA) and chloroacetic acid as grafting agents. Its structure was characterized by IR and ultraviolet spectroscopy and its antibacterial activitiy against S. aureus, E. coli and A. niger were evaluated. Results: The prepared water-soluble CMCQAS had a distinct antibacterial activity against S. aureus, E. coli and A.niger, which was higher than that of chitosan (CS).

Key words: chitosan, carboxymethyl, quaternary ammonium salt, antibacterial activity

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