Fig. 1.

Typical HPLC-evaporative light scattering detector chromatograms. Raw (A) and steamed Vietnamese ginseng at 105°C for 2 h (B), 4 h (C), 8 h (D), 12 h (E), 16 h (F), and 20 h (G). Peaks: 1, unknown 1; 2, unknown 2; 3, M-R1; 4, G-Rg₁ + G-Re; 5, M-R2; 6, V-R11; 7, P-RT4; 8, V-R2 + V-R1; 9, unknown 3; 10, unknown 4; 11, G-Rb₁; 12, 20(S) G-Rh₁; 13, unknown 5; 14, 20(R) G-Rh₁; 15, G-Rb₂; 16, G-Rd; 17, G-Rk₃; 18, G-Rh₄; 19, 20(S) G-Rg₃; 20, 20(R) G-Rg₃; 21, G-Rk₁; 22, G-Rg₅. HPLC, high performance liquid chromatography.