Pattern recognition of the fingerprint of Polygonum orientale in Guizhou Province / 中成药

ABSTRACT

AIM: To study pattern recognition of the fingerprint of Polygonum orientale from Guizhou Province. METHODS: 20 batches of samples,Polygonum orientale,come from different producing areas and harvest time were carried out to gain fingerprints by HPLC-DAD,as compared with retention time and ultraviolet spectra of standard substances.The pattern recognition of the characteristic fingerprint of Polygonum orientale,known as cluster analysis and principal component analysis,formed. RESULTS: The fingerprint of 20 batches of Polygonum orientale showed 12 characteristic peaks,in which 9 common peaks were confirmed.the samples were grouped into 3 types of harvest time. CONCLUSION: The quality of Polygonum orientale in Guizhou Province is stable,the pattern recognition of the fingerprint provides the experimental basis for manufacture and quality control of Polygonum orientale.