目的 分析6种环糊精（α-环糊精、β-环糊精、甲基化-β-环糊精、羟丙基-β-环糊精、磺丁基醚-β-环糊精、羧甲基-β-环糊精）对复方血脂宁中不同成分的选择性提取作用，并建立环糊精对不同成分的提取作用函数。方法 应用超高效液相色谱（UPLC）指纹图谱对血脂宁不同提取物中化学成分进行检测，采用主成分分析（PCA）对所有样本中已知化合物的峰面积数据进行分析；结合计算机辅助分析手段计算、查询血脂宁中已知成分的结构特征参数，分析不同环糊精对不同成分的选择性提取作用；并采用1stOpt pro1.5软件建立各环糊精对不同结构成分的选择性提取函数方程。结果 PCA可有效区分血脂宁不同提取物，且可获取不同提取物中的重要区分变量；不同类型的环糊精对不同成分具有近似的选择性提取趋势，且对不同性质分子的提取能力不同；建立了各环糊精的提取能力与成分结构性质间的函数方程，且拟合相关系数良好（r≥ 0.868 5）。结论 不同类型环糊精对复方血脂宁成分具有选择性提取作用，为环糊精及其衍生物在中药领域的应用提供了一定的理论依据。

Objective To analyze the selective extraction effect of six various cyclodextrins (α-cyclodextrin, β-cyclodextrin, methylated-β-cyclodextrin, hydroxypropyl-β-cyclodextrin, sulfobutyl ether-β-cyclodextrin, and carboxymethyl-β-cyclodextrin) on components in Chinese patent medicine Compound Xuezhining (XZN), and to establish functional equation of selective extraction effect of cyclodextrin on different chemical ingredients. Methods The chemical ingredients in each cyclodextrin extract of XZN were detected by ultrahigh-performance liquid chromatography (UPLC) fingerprints, principal component analysis (PCA) was employed to analyze the peak areas of known chemical ingredients in all samples. The structural parameters of the known components in XZN were calculated and inquired using computer aided analysis to analyze the selective extraction effect of various cyclodextrins on components. 1stOpt pro1.5 was applied to establish functional equation of selective extraction effect of cyclodextrin on chemical ingredients with different structures. Results Different extracts of XZN were distinguished effectively via PCA, and most discriminant variables for different extraction methods were obtained simultaneously. Various cyclodextrins have similar trends of selective extraction effect on components, and have different extraction effects for molecule with different properties. The functional equation between the extraction capacity of various cyclodextrins and the structural properties of the constituents was established, and the correlation coefficient is good (r > 0.86). Conclusion Different types of cyclodextrins have a selective extraction effect on the compound in XZN, which provides a theoretical basis for the selection and application of cyclodextrin and its derivatives in traditional Chinese medicine.

国家自然科学基金资助项目（81473543）