星点设计-效应面法优化磷酸川芎嗪温敏凝胶的处方

目的通过星点设计-效应面法优化磷酸川芎嗪温敏凝胶处方.方法以泊洛沙姆407、泊洛沙姆188为考察因素,以胶凝温度、黏度、渗透压为考察指标,分别用多元线性模型、二次多项式模型描述考察指标和两个考察因素之间的数学关系,确定优化处方,最后进行验证.结果根据多元线性模型和二次多项式模型,发现两个考察因素和考察指标之间存在可信的定量关系,二次多项式模型比多元线性模型置信度高.结论采用星点设计-效应面法,得到了基于二次多项式线性模型的磷酸川芎嗪处方优化模型,实现了该原位凝胶的处方优化.

Optimization of Ligustrazine Phosphate Thermosensitive Gel Formulation by Central Composite Design-response Surface Methodology

OBJECTIVE: To optimize the formulation of ligustrazine phosphate thermosensitive gel by the central composite design-response surface methodology (RSM plus CCD). METHODS: In the formulation design using RSM plus CCD, independent variables were the amounts of poloxamer 407 and poloxamer 188, and gel temperature was dependent variable. Multilinear and quadratic models were used to estimate the relationship between the dependent and the independent variables, select the optimal formulations and validate. RESULTS: The quantitative relationships between two factors and evaluation index were characterized, quadratic model had better prediction capability than multilinear model. CONCLUSION: Quadratic model is performed in the optimization of formulation due to the statistical confidence. The optimization of ligustrazine phosphate thermosensitive gel formulation can be achieved by the central composite design and response surface methodology.