753971.fig.001a
(a)
753971.fig.001b
(b)
753971.fig.001c
(c)
Figure 1: Direct flow injection ESI-IT-MS fingerprint spectra in full scan, obtained in negative ion mode. (a) Normal mass scan in the range of m/z 50–1200 of the acetone : water (7 : 3, v/v) extract, (b) normal mass scan in the range of m/z 50–1200 of the BuOH fraction, and (c) normal mass scan in the range of m/z 50–1200 of the EtOAc fraction. For spectrometric conditions, see Section 2.