789067.fig.001a
(a) Ephedrine
789067.fig.001b
(b) EGCG
789067.fig.001c
(c) Caffeine
789067.fig.001d
(d) Ephedrine in Gambisan
789067.fig.001e
(e) EGCG in Gambisan
789067.fig.001f
(f) Caffeine in Gambisan
Figure 1: HPLC profiles of Gambisan and its standard compounds of ephedrine, EGCG, and caffeine. (a), (b), and (c) are profiles of standard ephedrine, EGCG, and caffeine, respectively. (d), (e), and (f) are profiles of ephedrine, EGCG, and caffeine extracted from Gambisan. Detection was done at 210 nm (about 27 min), 280 nm (about 7.5 min), and 280 nm (about 11.5 min), respectively.