title: Chromatographic Fingerprints Combined with Chemometric Methods Reveal the Chemical Features of Authentic Radix Polygalae.
abstract: GC-MS fingerprints of Radix Polygalae (RP) were measured for deliberately collected samples. A total of 88 volatile components were identified and quantified by subwindow factor analysis, heuristic evolving latent projection, and retention index. Next, an efficient discrimination model based on partial least-squares (PLS) discriminant analysis (DA) was developed to distinguish the superior RP samples from the inferior ones, and the reliability and predictive ability of the model was evaluated by cross-validation and permutation tests. Furthermore, four components (1-octanol, shyobunone, isobornyl acetate, and α-asarone) were screened by coefficient β of PLS-DA. They represented the important chemical features of authentic RP and could be applied to the accurate discrimination and QC of RP in the future. Our results suggest that chromatographic fingerprints coupled with chemometric methods provide an effective and convenient strategy for QC of RP and are helpful for revealing the chemical features of a complex analytical sample.
authors.affiliation: Kunming University of Science and Technology, Yunnan Food Safety Research Institute, Kunming 650500, China.
authors.forename: Zhongquan
authors.initials: Z
authors.lastname: Xin
authors.affiliation: Kunming University of Science and Technology, Yunnan Food Safety Research Institute, Kunming 650500, China.
authors.forename: Dabing
authors.initials: D
authors.lastname: Ren
authors.affiliation: Central South University, College of Chemistry and Chemical Engineering, Changsha 410083, China.
authors.forename: Xiaojuan
authors.initials: X
authors.lastname: Zhang
authors.affiliation: GuangZhou University of Chinese Medicine, Dongguan Mathematical and Engineering Academy of Chinese Medicine, Dongguan 523808, China.
authors.forename: Zhibiao
authors.initials: Z
authors.lastname: Yi
authors.affiliation: Kunming University of Science and Technology, Yunnan Food Safety Research Institute, Kunming 650500, China.
authors.forename: Lunzhao
authors.initials: L
authors.lastname: Yi
mesh_terms: D016002:Discriminant Analysis; D008401:Gas Chromatography-Mass Spectrometry; D016018:Least-Squares Analysis; D064209:Phytochemicals / Q000032:analysis*; D018517:Plant Roots / Q000737:chemistry*; D031801:Polygala / Q000737:chemistry*; D015203:Reproducibility of Results
chemical_list: D064209:Phytochemicals