星点设计-效应面法优化山楂叶总黄酮微孔渗透泵控释片处方

目的 应用星点设计-效应面法优化山楂叶总黄酮微孔渗透泵控释片处方.方法 以乳糖的用量、致孔剂用量、包衣增重为考察因素,2、6、12 h山楂叶总黄酮的累计释放度为评价指标,采用Design-expert软件对实验数据进行多元线性模型和二次多项式模型拟合,得出最佳数学模型,然后绘制效应图和等高线图,通过重叠等高线图得到最优处方并进行验证.结果 二次多项式模型相关系数优于多无线性模型,为最终拟合模型;最佳处方的各时间点累计释放度的实际值和预测值接近,相对偏差绝对值小于5％,且3个验证处方零级释放特性良好.结论 通过星点设计-效应面法建立的模型预测性良好,可用于对山楂叶总黄酮微孔渗透泵控释片处方的优化.

Optimization on formulation of microporosity osmotic pump tablet of total hawthorn leaf flavonoids by central composite design-response surface methodology

AIM To optimize the formulations of microporosity osmotic pump tablet of total hawthorn leaf flavonoids by a central composite design-response surface methodology.METHODS The independent variables comprised of the amount of lactose,pore-forming agent and coating weight gain,and the dependent variables involved the cumulative release after 2 h,6 h and 12 h.Design Expert software was used to fit multivariate linear models and quadratic multinomial models for experimental data.Response surface and contour over...