化工进展

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海藻酸钙/聚精氨酸微胶囊的载药和缓释性能

吴文果1,2,刘伟1,王士斌1,2,刘源岗1,2,陈爱政1,2   

  1. 1华侨大学化工学院,福建 厦门 361021;2生物材料与组织工程研究所,福建 厦门 361021
  • 出版日期:2014-05-05 发布日期:2014-05-05

Drug loading and release of poly-L-arginine/calcium alginate microcapsules

WU Wenguo1,2,LIU Wei1,WANG Shibin1,2,LIU Yuangang1,2,CHEN Aizheng1,2   

  1. 1School of Chemical Engineering,Huaqiao University,Xiamen 361021,Fujian,China;2Institute of Biomaterials and Tissue Engineering,Huaqiao University,Xiamen 361021,Fujian,China
  • Online:2014-05-05 Published:2014-05-05

摘要: 采用乳化-固化法,制备海藻酸钙/聚精氨酸微胶囊。分别考察不同聚精氨酸相对分子质量、海藻酸钠浓度、氯化钙浓度对海藻酸钙-聚精氨酸微胶囊载药量以及牛血红蛋白缓释性能的影响。实验结果表明,中相对分子质量聚精氨酸制备的海藻酸钙/聚精氨微胶囊的载药量较高并且具有更好的缓释效果。随着海藻酸钠浓度的升高,海藻酸钙/聚精氨微胶囊的载药量降低;随着氯化钙浓度的升高,海藻酸钙/聚精氨微胶囊的载药量先升高后略有降低;然而,以上因素对海藻酸钙/聚精氨微胶囊的缓释性能均无明显影响。

关键词: 乳化-固化法, 海藻酸钠, 聚精氨酸, 微胶囊, 缓释, 乳化-固化法, 海藻酸钠, 聚精氨酸, 微胶囊, 缓释

Abstract: Poly-L-arginine/calcium alginate microcapsules were prepared by emulsification-gelation. The influences of different concentrations of sodium alginate and calcium chloride as well as different molecular weights of poly-L-arginine on drug loading and controlled-release of bovine haemoglobin in microcapsules were investigated. The microcapsules with medium molecular weight of poly-L-arginine had higher drug-loading amount and better controlled release behavior. The drug-loading amount of microcapsules decreased with the increase of sodium alginate concentration. As the concentration of calcium chloride increased,the drug-loading amount firstly increased and then decreased slightly,however,the release properties were not obviously affected.

Key words: emulsification-gelation, sodium alginate, poly-L-arginine, microcapsules, controlled release, emulsification-gelation, sodium alginate, poly-L-arginine, microcapsules, controlled release

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