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. 2019 Nov 7;9(11):271. doi: 10.3390/metabo9110271

Figure 9.

Figure 9

HPLC-DAD chromatograms (210 nm) of G. asclepiadea herb extract before (a) and after (b) pre-chromatographic reaction with DPPH radicals and G. gelida roots extract before (c) and after (d) pre-chromatographic reaction with DPPH radicals. Zone of compounds numbered as follows: i—loganic acid; ii—swertiamarin; iii—isoorientin-2″-O-glucoside; iv—gentiopicroside; v—mangiferin; vi—isovitexin-2″-O-glucoside; vii—isoorientin; viii—saponarin; ix—isovitexin; x—luteolin-7-O-glucoside; xi—apigenin-7-O-glucoside; xii—gentiopicroside-6″-O-glucoside; xiii—gelidoside (rindoside); xiv—trifloroside. The numbers demonstrate the percentage of peak area reduction after pre-chromatographic reaction with DPPH radicals.