Fig. 1

Common licorice HPLC fingerprint patterns recorded at a 250 and b 330 nm. At 250 nm, peak 6 is liquiritin apioside, peak 7 is liquiritin, peak 10 is isoliquiritin apioside, peak 12 is isoliquiritin, peak 13 is neoisoliquiritin, peak 17 is liquiritigenin, peak 25 is licoricesaponin G2, peak 27 is isoliquiritigenin, peak 28 is formononetin, peak 30 is glycycoumarin, peak 32 is semilicoisoflavone B, peak 34 is licoisoflavone A, and peak 38 is licoisoflavone B. At 330 nm, peak 6 is violanthin, peak 8 is liquiritin apioside, peak 10 is liquiritin, peak 15 is isoliquiritin apioside, peak 17 is isoliquiritin, peak 18 is neoisoliquiritin, peak 20 is liquiritigenin, peak 22 is isoliquiritigenin, peak 23 is glycycoumarin, peak 24 is semilicoisoflavone B, peak 27 is licoisoflavone A, peak 28 is glycyrol, peak 30 is licoflavonol, and peak 31 is licoisoflavone B