Research Article
Comparison of the Saponins in Three Processed American Ginseng Products by Ultra-High Performance Liquid Chromatography-Quadrupole Orbitrap Tandem Mass Spectrometry and Multivariate Statistical Analysis
Figure 2
Base peak chromatogram of American ginseng of natural drying (ND), steam drying (SD), and vacuum freeze-drying (VFD) in the negative ion mode.