山楂叶总黄酮自微乳化释药系统的研究

Self-microemulsifying drug delivery system of flavonoids in hawthorn leaves

目的研究山楂叶总黄酮自微乳化释药系统的处方工艺。方法通过溶解度、处方配伍试验和伪三元相图的绘制,以色泽、乳化时间和乳化后粒径大小为指标,筛选油相、表面活性剂、助表面活性剂的最佳配伍和处方配比。并以益心酮片为参比,测定山楂叶总黄酮自微乳化释药系统的溶出度。结果山楂叶的自微乳化处方中油相为乳化剂为Labrasol(35%),助乳化剂为Transcutol P(10%)。自微乳化后的粒径为(39.5±5.4)nm,自微乳化时间小于1min。蒸馏水中10min累积溶出度达70%以上,而益心酮片60min的溶出度不足50%。结论所制备的山楂叶总黄酮自微乳化释药系统达到了设计要求,为山楂叶总黄酮新制剂开发提供了依据。

Objective To develop the formulation of self-microemulsifying drug delivery system for hawthorn leaves flavonoids （HAW-SMEDDS）. Methods The optimum formulations of oil phase, surfactant, and assistant surfactant for HAW-SMEDDS were screened by solubility test, compatibility test, and pseudo-ternary phase diagrams, with the time of formulating microemulsion, the consequence of visual examination, and particle size as indexes. The dissolution of HAW-SMEDDS was measured, taking the commercial tablet Yixintong Tablet as reference. Results The optimum self-microemulsifying drug delivery system was composed of Labrasol （35%）, Transcutol P （10%）. The particle diameter was （39.5±5.4） nm, the time of self-microemulsifying was less than 1 min. The percent of accumulated dissolution of hawthorn leaves flavonoids in SMEDDS in distilled water was up to 70% at 10 min, while that in the Yixintong Tablet was less than 50% at 60 min. Conclusion The formulation of HAW-SMEDDS preparation could meet the request of the design. It could provide the reference for the new dosage form.