Quantitative and chemical fingerprint analysis for quality control of rhizoma Coptidischinensis based on UPLC-PAD combined with chemometrics methods.
To control the quality of rhizoma Coptidis, a method based on ultra performance liquid chromatography with photodiode array detector (UPLC-PAD) was developed for quantitative analysis of five active alkaloids and chemical fingerprint analysis. In quantitative analysis, the five alkaloids showed good regression (R > 0.9992) within test ranges and the recovery of the method was in the range of 98.4-100.8%. The limit of detections and quantifications for five alkaloids in PAD were less than 0.07 and 0.22 microg/ml, respectively. In order to compare the UPLC fingerprints between rhizoma Coptidis from different origins, the chemometrics procedures, including similarity analysis (SA), hierarchical clustering analysis (HCA), principal component analysis (PCA) were applied to classify the rhizoma Coptidis samples according to their cultivated origins. Consistent results were obtained to show that rhizoma Coptidis samples could be successfully grouped in accordance with the province of origin. Furthermore, five marker constituents were screened out to be the main chemical marker, which could be applied to accurate discrimination and quality control for rhizoma Coptidis by quantitative analysis. This study revealed that UPLC-PAD method was simple, sensitive and reliable for quantitative and chemical fingerprint analysis, moreover, for the quality evaluation and control of rhizoma Coptidis.
Kong
Wei-Jun
WJ
China Military Institute of Chinese Materia Medica, 302 Military Hospital of China, 100 West, 4th Ring Middle Road, Beijing 100039, PR China.
Zhao
Yan-Ling
YL
Xiao
Xiao-He
XH
Jin
Cheng
C
Li
Zu-Lun
ZL
D000470:Alkaloids / Q000032:analysis*; D002853:Chromatography, Liquid; D016000:Cluster Analysis; D000089042:Coptis chinensis; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D025341:Principal Component Analysis; D011786:Quality Control; D015203:Reproducibility of Results
D000470:Alkaloids; D004365:Drugs, Chinese Herbal; C107393:Coptidis rhizoma extract