786151.fig.001
Figure 1: Ultraviolet spectra for different types of compounds. (a) Glycyrrhizin; (b) Formononetin; (c) Sophoraflavone B and Kumatakenin B; (d) Isoliquiritin apioside, Isoliquiritin, and Isoliquiritigenin; (e) Neoglycyrol and Isoglycyrol; (f) 4′-O-glucopyranyl-(1-2)-Liquiritigenin-glucopyranoside, Liquiritin apioside, 7,4′-O-Liquiritigenin-diglucopyranoside, Liquiritin, 6′′-O-a-hydroxypropynoylliquiritin, and Liquiritigenin; (g) Medicarpin-3-O-glucoside.