Fig. 7

UPLC chromatograms of the extracts of reddish pigments (a) and sappanwood (b) monitored at 275 nm and UV–Vis spectra of characteristic constituents (I, III: sappanwood Type A; II, IV: sappanwood Type C)
UPLC chromatograms of the extracts of reddish pigments (a) and sappanwood (b) monitored at 275 nm and UV–Vis spectra of characteristic constituents (I, III: sappanwood Type A; II, IV: sappanwood Type C)