目的 分析防己根、根茎、茎、叶4个部位UPLC指纹图谱差异，初步获取不同部位之间化学成分类型及部分有效成分含量差异，为合理开发和利用防己药材提供依据。方法 采用UPLC法建立防己不同部位化学指纹图谱；采用中药色谱指纹图谱相似度评价系统（2012版）计算不同部位共有峰和相似度，并分析各部位特征峰；利用SPSS 23.0，采用成对样本t检验，对不同样本及不同成分根和根茎间含量差异进行比较。结果 根和根茎化学成分相似度为0.928，两者含化学成分类似，并均含有防己药材指标性成分粉防己碱和防己诺林碱；茎和叶化学成分相似度为0.947，茎、叶与根及根茎相似度均较低，且不含粉防己碱和防己诺林碱。成对样本t检验结果表明，根茎化学成分综合含量高于根中含量，且其差异主要来源于其他非指标性成分，其指标成分粉防己碱和防己诺林碱两者间无显著差异。结论 防己不同部位化学成分类型和含量存在显著差异，根茎中化学成分类型与根相似，且部分成分含量高于根中含量，可作为优质防己药材与根同用；茎和叶中不含防己药材指标性成分粉防己碱和防己诺林碱，不能作为防己药材代替根使用，但其含有许多其他化学成分，可作为新资源用于开发其他药用功效。

Objective To analyze and compare UPLC fingerprints of root, rhizome, stem, and leaf of Stephania tetrandra, learn the differences in chemical component types and contents of main active components, and provide basis for rational development and utilization of S. tetrandra. Methods UPLC was used to obtain characteristic chromatograms of different parts; The Similarity Evaluation System for Chromatographic Fingerprints of Traditional Chinese Medicine (Version 2012) was run to capture the common peaks of different parts and calculate their similarity and analyze the characteristic peaks of different parts. SPSS 23.0 was run to compare the difference in component contents of the roots and rhizomes using the paired sample t-test. Results The similarity in chemical composition between root and rhizome was 0.928, indicating they have similar chemical composition, and both of them contained tetrandrine and fangchinoline, the index components. The similarity between rhizome and leaf was 0.947; The similarity was low between stem, leaf and root and rhizome, and there were no tetrandrine and fangchinoline in the first two parts. The results of paired samples t-test show that the total content of chemical components in rhizome was higher than that in roots, and the mainly difference came from other non-index components, but there was no significant difference between tetrandrine and fangchinoline. Conclusion Significant differences are present in chemical composition types and contents of different medicinal parts of S. tetrandra; The type of chemical components in rhizome is similar to that in root, and the content of some components in rhizome is significantly higher than that in root, which means that rhizomes can be used as an equivalent of roots. Stems and leaves cannot be a substitute for roots because they do not contain tetrandrine and fangchinoline, but they contain many other chemical components which can be utilized as a new resource.

R286.2

国家自然科学基金资助项目（81760681）；广西中医药大学2019年研究生教育创新计划项目（YCSZ20190027）；中药学广西一流学科（桂教科研〔2018〕12号）