穿心莲UPLC-PDA指纹图谱研究及4种内酯类成分含量测定

Research on UPLC-PDA fingerprint of andrographis paniculata and quantitative determination of 4 major constituents

分析研究不同部位及产地穿心莲药材,为穿心莲相关制剂工艺提供依据。以穿心莲内酯峰为参照,确定了27个共有指纹峰,建立了23批穿心莲药材的UPLC-PDA数字化定量指纹图谱,特征提取后对其进行主成分分析(PCA);采用外标法测定23批穿心莲药材中穿心莲内酯、新穿心莲内酯、去氧穿心莲内酯、脱水穿心莲内酯成分含量,并采用Plackett-Burman试验设计结合pareto图研究耐用性因素对方法的影响。结果发现,穿心莲药材部位比产地对药材质量的影响更显著;药材不同部位4种内酯含量差异大;流动相p H是影响方法耐用性较大的因素。

Andrographis paniculata from different parts and origins were analyzed by UPLC-PDA fingerprint to provide reference for related preparation technology. Using the peak of andrographolide as reference, 27 common peaks were identified, and digitized UPLC-PDA fingerprints for 23 batches of andrographis paniculata were established in this research. Principal component analysis （PCA） was carried out after feature extraction. The contents of andrographolide, neoandrographolide, deoxyandrographolide, dehydroandrographolide were determined by external standard method. The Plaekett-Burman design combined with pareto chart was used to analyze the factors influencing the robustness of the method. It was found that the medicinal part has a more remarkable influence on the quality of andrographis paniculata than the origin. The contents of the 4 lactones the differ greatly in the different parts of andrographis paniculata, and the pH of the mobile phase is an important factor that influenced the robustness of the method.