中药莪术GC-MS指纹图谱研究

目的研究中药莪术的GC-MS指纹图谱。方法运用GC-MS分析3种基原的18个莪术样品,所得TIC图谱采用“中药色谱指纹图谱计算机相似性评价系统”软件进行模式分析及相似度计算。通过质谱数据与文献对照检识出主要特征峰成分,并根据主要特征成分对18个样品进行SPSS聚类分析。结果3种基原18个莪术样品的相似度(全谱)计算结果较低;通过聚类分析结果可将莪术分为两类,温郁金和蓬莪术各为一类,广西莪术样品则无法成类。因此基于聚类分析结果,建立了温郁金和蓬莪术的指纹图谱共有模式,并分别具有较高的相似度,而广西莪术6个样品因成分差异较大,暂未建立指纹图谱共有模式。结论共有指纹图谱是多基原中药质量控制的基础,但多基原中药莪术GC-MS指纹图谱无法建立,提示不同基原莪术化学成分差异与药理作用的关系值得研究。

The fingerprint of Ezhu by GC-MS

AIM: To study the fingerprint of Ezhu by GC-MS. METHODS: GC-MS analysis was performed for 18 samples of three species of Curcuma used as Ezhu. TIC profiles were evaluated by "Computer Aided Similarity Evaluation System" (MATLAB5.3 based, Ver. 1.240, developed by Research Center for Modernization of Chinese Medicine, Central South University). The characteristic peaks in chromatograms were identified by comparing mass data with literatures. Hierarchical clustering analysis was performed by SPSS based on the relative peak area (RPA) of identified peak to germacrone in 18 samples. RESULTS: Resemblance values of 18 samples of Ezhu were pretty low. The mutual mode fingerprint plots of Ezhu were failed to develop. However, 18 samples were divided into two main clusters based on hierarchical clustering analysis, Curcuma wenyujin cluster and Curcuma phaeocaulis cluster, but the samples of Curcuma kwangsiensis were dispersive. Therefore, based on hierarchical clustering analysis, two mutual mode fingerprint plots of Curcuma wenyujin and Curcuma phaeocaulis were developed. But that of Curcuma kwangsiensis was failed because of low resemblance among samples. CONCLUSION: The mutual mode fingerprint is the basis for quality control of Chinese materia medica from multi-origins. Development of GC-MS fingerprint of Ezhu was failed, which indicates that the chemical components in different species of herbs used as one Chinese materia medica may be significantly different. The relationship of chemical components and pharmacological activities should be further studied so as to elucidate the rationality of Chinese materia medica from multi-origins.