详细信息
DCC缩合酯化法合成水杨酸低聚壳聚糖酯及抑菌性研究
Study on the Preparation of Salicylate Ester of Chitooligosaccharide by DCC Condensation Method and Its Anti-bacterial Function
文献类型:期刊文献
中文题名:DCC缩合酯化法合成水杨酸低聚壳聚糖酯及抑菌性研究
英文题名:Study on the Preparation of Salicylate Ester of Chitooligosaccharide by DCC Condensation Method and Its Anti-bacterial Function
作者:韩永萍[1];卢晶[1];张欢[1];林强[1]
第一作者:韩永萍
机构:[1]北京联合大学生物化学工程学院
第一机构:北京联合大学生物化学工程学院
年份:2011
卷号:52
期号:3
起止页码:155-158
中文期刊名:化学世界
外文期刊名:Chemical World
收录:北大核心:【北大核心2008】;CSCD:【CSCD2011_2012】;
基金:北京市教委项目资助(KM201011417007)
语种:中文
中文关键词:低聚壳聚糖;DCC法;酯化;抑菌
外文关键词:chitooligosaccharide(CTS); DCC; esterification; anti-bacterial function
摘要:在保留C2-NH2抗菌活性基团的基础上,以DCC为脱水剂制备了具有双抑菌活性中心的水杨酸低聚壳聚糖酯(SEC),并对其抑菌活性进行了研究。结果显示,SEC最佳合成反应条件为:n(低聚壳聚糖)∶n(水杨酸)∶n(DCC)=1∶4∶4,冰浴条件下酯化反应48 h,产物酯化度接近73%。该条件下制备的壳聚糖衍生物对各种常见菌的抑制效果明显增强,而且抑菌范围变宽。
Retaining the amine group and taking N,N'-dicyclohexylcarbodiimide(DCC) as a dehydration agent,a salicylic ester of chitooligosaccharide(SEC) with two antibacterial active sites was synthesized and its antibacterial and antifungal activities were studied.The experimental results showed that the optimum reaction conditions were: n(chitooligosaccharide)∶n(salicylic acid)∶n(DCC)=1∶4∶4 and reacting for 48 h in ice bath.The esterification degree of SEC prepared under this condition could reach 72%,and it has high efficiency and broad anti-bacterial activity.
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