Antioxidant Activities and Phytochemicals of Leaf Extracts from 10 Native Rhododendron Species in Taiwan

Figure 3

(a) The online HPLC-DPPH chromatograms of the BuOH fraction from leaves of R. pseudochrysanthum. (b) Isolated and identified phytochemicals: (2R,3S)-catechin (1), (2R,3R)-epicatechin (𝟏^′), (2R,3R)-dihydromyricetin 3-O-β-L-arabinopyranoside (2), (2S,3S)-taxifolin 3-O-β-L-arabinopyranoside (𝟐^′), (2R,3R)-taxifolin 3-O-β-L-arabinopyranoside (3), myricetin 3-O-β-D-glucopyranoside (𝟑^′), rutin (4), hyperoside (5), and quercitrin (6).

(a)

(b)