摘要
过氧化氢降解与超滤结合制备壳寡糖,工艺简单可行,产品平均相对分子质量小而分布窄。试验确定过氧化氢对壳聚糖降解的最适反应条件为:温度(T)=75℃,时间(t)=3 h,壳聚糖和过氧化氢用量比(n)=1:1,pH=3.6。降解产品经过超滤处理后可以获得收率为42%、平均相对分子质量在1 000左右的优质壳寡糖产品。
It is simple and feasible to prepare chitobiose by hydroperoxide degradation with ultrafiltration, which can produce low molecular with narrow distribution. degradation occurs at 75℃ （T）, for 3 h（t）, with a The chitobiose molecular is about 1 000, and it can The experiment results show that the optimum hydroperoxide proportion of chitosan to hydroperoxide. （ n ） = 1 ： 1 and pH = 3.6. be obtained by ultrafiltration with a recovery is 42 %.
出处
《北京联合大学学报》
CAS
2007年第2期67-69,76,共4页
Journal of Beijing Union University
关键词
壳聚糖
壳寡糖
降解
超滤
过氧化氢
chitosan
chitobiose
degradation
ultrafiltration
