ABSTRACT
Objective To establish the analytical method for the fingerprint of the volatile components in the root tuber of Pseudostellaria heterophylla by GC-MS and provide the basis for quality assessment of the crude drug.Methods The volatile components in the root tuber of P.heterophylla from different habitats were analyzed and the chromatographic fingerprints were established by GC-MS.The common peaks were determined and the fuzzy cluster was selected to compare the results.Results There were 12 main characteristic components in the volatile components in the root tuber of P.heterophylla.GC-MS Fingerprint of 12 common peaks was established preliminarily.Conclusion The method is reliable and accurate,and can be used for quality control of the root tuber of P.heterophylla.with favourable reproducibility.