黄芩苷明胶微球制备工艺研究

Study on Techniques of Preparing Baicalin Gelatin Microspheres

目的通过正交设计筛选出制备黄芩苷明胶微球的最佳工艺。方法以天然的可生物降解的明胶为载体,液体石蜡为油相,Span80为乳化剂,戊二醛为交联剂,采用乳化化学交联法制备黄芩苷明胶微球,测定明胶微球的平均粒径、载药量、包封率,并对工艺重现性进行了考察。结果得到形态圆整、表面光滑、大小均匀的微球,其平均粒径为27.47μm,载药量为8.18%,包封率为70.21%。结论该制备工艺稳定可行。

Objective To optimize the best techniques of preparing baicalin gelatin microspheres with orthogonal experimental design.Methods Baicalin gelatin microspheres were prepared by emulsion chemical-cross linking method with degradable gelatin as carrier,liquid paraffin as oil phase,Span-80 as emulsifier.The particle size,containing efficiency of microspheres were determined and technique reproducibility was studied.Results Microspheres with good shape,smooth surface and narrow size distribution were prepared.The average diameter of microspheres was 27.47 μm,the loading amount of medicine was 8.18% and encapsulation efficiency was 70.21%.Conclusion The preparation procedure established was stable and practical.