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白及多糖微球的制备工艺和表征 被引量:7

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摘要 目的利用白及多糖制备空白白及微球,考察其最佳制备工艺与表征。方法分离纯化白及多糖,乳化-冷凝-化学交联法制白及微球,单因素实验并以水-油相比率、白及多糖浓度、搅拌速度、交联剂浓度4个因素进行3水平的正交实验,以微球的产率作为评价指标,优化出白及微球的最佳制备工艺。扫描电镜与激光粒度仪观察微球形态和大小,观察微球分散性、悬浮性和沉降时间、吸水溶胀率、导管推注表现及溶解时间。结果微球呈圆形,大小较均匀;水-油相比和白及多糖浓度对微球的产率影响较大。微球在生理盐水与欧乃派克中形成不稳定悬液,分散性良好,沉降时间与粒径成正比;在生理盐水中溶胀速度快于造影剂中,不同pH值时溶胀率无明显变化。微球较容易通过5F导管,但大于400μm微球吸水后难以通过3F微导管,约6周后微球完全融解。结论优化制备的白及微球符合栓塞剂的基本要求。
出处 《中成药》 CAS CSCD 北大核心 2013年第8期1795-1799,共5页 Chinese Traditional Patent Medicine
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