Fig. 1.

PCA of ginsenosides in different ginseng extracts. (A) Identification of ginsenoside Rg1 (1), Re (2), Rb1 (3), Rd (5), and astragaloside IV (4; internal control marker) was made by an MS detector. Representative chromatograms of standard markers (Standards), water extract (W), 50% ethanol extract (E50), and 90% ethanol extract (E90) under MRM mode were shown. (B) The scoring plot of different ginseng extracts by comparing the contents of chosen ginsenosides. PC1 and PC2 described ∼75% and ∼22% of total variability, respectively. (C) The loading plot of PC1 versus PC2 for four ginsenosides, from LC-MS profiles, of three ginseng extracts was shown. All values were from n = 3.

PCA, principal component analysis; PC1, principal component 1; PC2, principal component 2.