Fig. 4. The multivariate analysis of the metabolite data derived from 13 Taraxacum extracts. (A) The score plot and (B) loading plot of the PCA model showing PC1- PC2. (C) The score plot and (D) S-plot of the OPLS-DA model for T. campylodes (TCA) and T. coreanum (TCO), showing PC1-PC2. (E) The score plot and (F) S-plot of the OPLS-DA model for T. platycarpum (TP) and T. ussuriense (TU), showing PC1-PC2. In the score plots, the orange hexagons, blue squares, brown plus signs, pink circles, and yellow triangles correspond to T. platycarpum, T. ussuriense, T. coreanum, T. campylodes, and T. erythrospermum (TE), respectively. In the loading plots, important markers are labelled with xxx/yy, where xxx means m/z values and yy means retention time. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)