Chemical Differentiation of Dendrobium officinale and Dendrobium devonianum by Using HPLC Fingerprints, HPLC-ESI-MS, and HPTLC Analyses

Figure 6

HPTLC chromatogram of D. officinale and D. devonianum stems. Schaftoside (R1) and violanthin (R2) were used as markers. Nine batches of D. officinale (tracks 1–9) and eight batches of D. devonianum (tracks 10–17) were shown.