Fig 1. Specimens of Glycyrrhiza cultivars.
Fig. 2. UV spectrum of the standard compounds (A; liquiritin, B; isoliquilitigenin, C; licochalcone A).
Fig. 3. HPLC chromatograms of the standard compounds dissolved in 3㎎/㎖ of 50% ethanol (A); liquiritin, (B); isoliquilitigenin and licochalcone A.
Fig. 4. HPLC chromatograms of liquiritin from Glycyrrhiza cultivar extracts.
Fig. 5. HPLC chromatograms of isoliquiritigenin and licochalcone A from Glycyrrhiza cultivar extracts.
Fig. 6. Inhibition activity of Glycyrrhiza cultivar extracts on reactive oxygen species.
Fig. 7. Comparison of inhibition activity on reactive oxygen species between Glycyrrhiza cultivar extracts and vitamin C.
Fig. 8. DPPH radical scavenging activity of Glycyrrhiza cultivar extracts.
Fig. 9. Inhibition activity of Glycyrrhiza cultivar extracts on nitric oxide production.
Fig. 10. Effect of Glycyrrhiza cultivar extracts on BV2 cell proliferation.
Table 1. Inhibitory activities on peroxynitrite, NMDA receptor and total phenol content of Glycyrrhiza cultivars extracts.
Table 2. Contents of liquiritin, isoliquiritigenin and licochalcone A in the Glycyrrhiza cultivar extracts.
Table 3. Correlation coefficients between total phenol, liquiritin, isoliquilitigenin, lichochalcone A and activities in the Glycyrrhiza cultivar extracts.
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