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. 2020 Sep 10;9(9):847. doi: 10.3390/antiox9090847

Figure 1.

Figure 1

(A) HPLC Chromatogram of betulinic acid standard (Residence time = 11.349 min) with Chromatographic conditions: Symmetry Shield RP 18 (4.6 × 250 mm, 5 µm) column, methanol, λ = 210 nm, 0.5 mL/minutes flowrate. (B) HPLC Chromatogram of ethanolic extract of B. etnensis bark with Chromatographic conditions: Symmetry Shield RP 18 (4.6 × 250 mm, 5 µm) column, methanol, λ = 210 nm, 0.5 mL/minutes flowrate.