以任意放大多型性DNA之方法鉴别中药及复方中的术类

目的:藉由分子生物学的技术,鉴别中药复方中的单品药材—术类,以提升药材分析的灵敏度,进而促使药材品管升级。方法:藉由任意序列的引子,先以单品药材—术类为模板来建立该药材常用的品种,苍术及白术等之RAPD标志,以应用于复方之检测。结果:在RAPD的标志分析中,可得知引子OPF05对术类具有保留性,而引子OPF03则仅在白术有保留性,因而可以应用于区分苍术与白术。另外,白术诸种中,可由引子OPF14加以鉴别,而同种不同产地的白术,江坪上等与一等则可由引子OPF13得到区别。结论:中药材的鉴定,传统上以外型及化学方法加以区分,在本论文中,在分子层次上进行鉴定,除了灵敏度增加外,在复方及粉剂中,亦可有良好的鉴别效果。

Identification of Atractylodes plants in Chinese herbs and formulations by random amplified polymorphic DNA

AIM: An efficient, precise, and sensitive method for identifying Atractylodes plants has been established and will contribute significantly to quality control and scientific analysis in Chinese traditional medicine. METHODS: Twenty primers were applied for setting up the RAPD (randomly amplified polymorphic DNA) markers of Atractylodes plants, Atractylodes lancea DC ( A lancea DC ), Atractylodes japonica Koidz (A japonica K), and Atractylodes ovata DC (A ovata DC). The primer OPF03, OPF05, and OPF14 could discriminate them successfully. The results were also able to apply on the Chinese formulations with Atractylodes purchased from local markets. RESULTS: RAPD was used to investigate phylogenetic relationships among and within closely related species. RAPD analysis reflects heritable changes in the nucleotides sequence in both the coding and noncoding regions, because it is conducted directly from the DNA level. This work first conducted RAPD analysis of Atractylodes plants to establish their RAPD makers. CONCLUSION: The RAPD markers could be applied extensively in the Chinese herbal formulations.