壳聚糖.明胶载药微球的制备及释放性能.pdf
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2008年5月 化学工业与工程 第25卷第3期
2008 CHEMICALINDU锄YANDENGINEERING V01.25No.3
May
文章编号:1004—9533(2008)03—0215—05
壳聚糖.明胶载药微球的制备及释放性能
姚芳莲,于 潇,周玉涛
(天津大学化工学院,天津300072)
摘要:以壳聚糖(Cs)和明胶(Gel)为原料,采用乳液凝聚法制备了对药物具有缓释作用的微球。以
异喹啉为模拟药物,分别通过丙酮浸泡载药/常温干燥法和盐酸浸泡载药/氢氧化钠再生/冷冻干燥
法,制得不同栽药量的微球,并对其包封率和释放行为进行了研究。结果表明,当戊二醛(GD)与壳
15h后释放75%左右,包封率可以达到40%一50%,为将壳聚糖一明胶共混微球应用于生物医学领
域提供了试验基础。
关键词:壳聚糖;明胶;微球;异喹啉
文献标识码:A
中图分类号:TQ031
ofChitosan-Gelatin
Preparation DrugLoadingMicroshpere
andItsReleaseCharacteristics
YAO Yu—tao
Xiao,ZHOU
Fang·lian,YU
ofChemical and
(School EnglneeringTechnology,TianjinUniversity,Tianjin300072,China)
Abstract:A withcontrolledreleasecharacteristicWas from
chitosan·-gelatindmg··loadedmicrosphere prepared
chitosanand emulsion loadedwithdifferent of were
gelatinby coagulationmethod.Microspheres quantitydrug
viaacetonemarination-loomdriedmethodandHClmarination-NaOH
prepared temperature regeneration-freeze·
driedmethod asmodel then andreleasebehaviorwerestudied.
usingisoquinolinedrug,anddrugencapsulation
Whentheratioof tochitosanwasbetween0.40and0.53and loaded Was
20%一
glutaraldehyde drug quantity
Wasreleased thefirst15 theratioof
30%(mass h,and encapsulation
ratio),nearly75%drug during drug
40%一50%.Theresults fou
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