摘要
以壳聚糖与β-环糊精为原料、高碘酸钠为氧化剂、环氧氯丙烷为交联剂,用反相悬浮法制备新型壳聚糖/β-环糊精,用红外光谱和电镜扫描对其进行结构表征,研究其对葛根素的吸附性、洗脱性及重复使用性.结果表明,最佳吸附条件为:吸附时间4h,温度35℃,pH=7,葛根素初始浓度0.5mg/mL,壳聚糖/环糊精对葛根素的吸附量达52.43mg/g,洗脱率达89.69%,且表现出较好的重复使用性.
A new type chitosan-β-cyclodextrin copolymer was prepared with the chitosan and β-cyclodextrin as materials,sodium periodate as oxidant,epichlorohydrin as cross-linker using inverse suspension method. Its structure was characterized by FT-IR and SEM. Its adsorption and desorption performance to puerarin,and reusability were investigated. The results showed that the optimal conditions were： adsorption time 4 h,temperature 35℃,pH？7 and initial concentration of puerarin 0.5 mg/mL,the maximum adsorption of puerarin on chitosan-β-cyclodextrin was 52.43 mg/g,its elution rate of puerarin 89.69%,and it showed good reusability.
出处
《过程工程学报》
CAS
CSCD
北大核心
2011年第6期978-983,共6页
The Chinese Journal of Process Engineering
关键词
壳聚糖/环糊精交联聚合物
葛根素
吸附
环氧氯丙烷
chitosan-cyclodextrin cross-linked copolymer
puerarin
adsorption
epichlorohydrin
