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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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