Ginsenosides in Commercial Ginseng Products Analyzed by Liquid Chromatography-Tandem Mass Spectrometry

Table 2

Solvent gradient used for HPLC analysis. A is 0.02% acetic acid in water, and B is 0.02% acetic acid in acetonitrile.

Time (min)	% A	% B
0.0	95	5
0.6	70	30
30.0	67	33
60.0	5	95
70.0	95	5