Monoamine Oxidase-A Inhibition and Associated Antioxidant Activity in Plant Extracts with Potential Antidepressant Actions

Figure 2

HPLC chromatograms of extracts from H. perforatum flowers. (a) Detection of hypericins at 590 nm. 1: protopseudohypericin; 2: pseudohypericin; 3: protohypericin; and 4: hypericin. (b) Detection of phenols and flavonoids at 265 nm. 1: chlorogenic acid; 2: rutin; 3: hyperoside; 4: isoquercitrin; 5: miquelianin; 6: acetyl hyperoside; 7: quercitrin; 8: quercetin; and 9: biapigenin. (c) Detection of phloroglucinols at 280 nm. 1: hyperfirin, 2: adhyperfirin; 3: hyperforin; and 4: adhyperforin.

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(b)  nm

(c)  nm