Research Article

Simultaneous Extraction Optimization and Analysis of Flavonoids from the Flowers of Tabernaemontana heyneana by High Performance Liquid Chromatography Coupled to Diode Array Detector and Electron Spray Ionization/Mass Spectrometry

Figure 8

(a) Full scan ESI/MS spectra of parent ion of rutin at m/z 610 and fragment ions at m/z 460 (loss of rhamnose moiety), and m/z 303 (loss of glucose moiety that yield quercetin). (b) Parent ion of sinapoyl-hexoside at m/z 383 and [M – H − 159]3− at m/z 224.
450948.fig.008a
(a)
450948.fig.008b
(b)