基于QbD理念的生血宝合剂HPLC-UV-MS定量分析方法研究

Quantitative analysis method of Shengxuebao Mixture by HPLC-UV-MS based on quality by design concept

该研究基于质量源于设计理念,通过逐步优化的策略建立了定量分析生血宝合剂中8种指标成分的HPLC-UV-MS方法。首先确定分析目标概貌,选择指标成分为芍药内酯苷、芍药苷、二苯乙烯苷、特女贞苷、旱莲苷D、大黄素、毛蕊异黄酮苷和黄芪甲苷;接着以指标成分的分离度及信噪比为关键方法属性(CMA),采用部分析因实验进行第一步优化,通过多元线性回归分析筛选出关键方法参数(CMP)为流动相加酸量、柱温、梯度和波长;然后通过单因素优化确定了检测波长和流动相加酸量,提高了分离度和信噪比;再以特女贞苷和大黄素的峰对称因子为CMA进行第二步优化,根据中药体系特点,提出经验公式用于估计CMP的范围大小,选择Box-Behnken实验设计进行优化;最后建立数学模型,计算获得设计空间并验证。对优化后的色谱方法进行方法学验证,结果表明建立的HPLC-UV-MS方法具有良好的精密度、准确性和稳定性,可用于生血宝合剂中指标成分含量的定量测定。

In this study, the HPLC-UV-MS method for the simultaneous determination of eight active ingredients of Shengxuebao Mixture were developed based on the concept of quality by design(QbD)with a stepwise optimization approach. After the analytical target profile(ATP)had been defined, albiflorin, paeoniflorin, 2,3,5,4′-tetra-hydroxy-stilbene-2-O-β-D-glucopyranoside, specnuezhenide, ecliptasaponin D, emodin, calycosin-7-glucoside, and astragaloside Ⅳ were identified as the indicator components. The resolution and the signal-to-noise ratio of indicator components were then selected as critical method attributes(CMA) for the first step optimization. According to the results collected from fractional factorial design, critical method parameters(CMP) were determined with a multiple linear regression method, which included the amount of acid addition in the mobile phase, temperature, gradient, and wavelength. After that, the amount of acid addition and the wavelength were optimized to improve the resolution and the signal-to-noise ratio of the indicator components. The peak symmetry factors of specnuezhenide and emodin were then set as CMA for the second step optimization. The Box-Behnken designed experiments were conducted. The temperature and gradient were optimized after modelling. The design space were calculated and verified. The optimized analytical method was validated, and the results showed a good precision, accuracy and stability, which means that it can be used for the quantification of the indicator components in Shengxuebao Mixture.