Figure 9. Figure 9: UPLC/MS of luteolin and ethyl acetate extract of H. radicata flower (HRF-EA). An HPLC chromatogram of luteolin (A), precursor ions (B), and their corresponding fragments (C) obtained by a UPLC/MS (negative mode) analysis chromatogram of luteolin. An HPLC chromatogram of the HRF-EA (D), precursor ions (E), and their corresponding fragments (F) obtained by a UPLC/MS (negative mode) analysis chromatogram of HRF-EA.