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HPLC chromatograms of G. algida and G. triflora teas decoctions before and after prechromatographic reaction with DPPH-radicals. Compounds: 1—loganic acid-6′-O-β-d-glucoside; 2—loganic acid; 3—swertiamarin; 4—isoorientin-4′-O-β-d-glucoside; 5—gentiopicroside; 6—sweroside; 7—mangiferin; 8—saponarin; 9—isosaponarin; 10—isoorientin; 11—isovitexin; 12—isoscoparin.
