Development and Optimization of an UPLC-QTOF-MS/MS Method Based on an In-Source Collision Induced Dissociation Approach for Comprehensive Discrimination of Chlorogenic Acids Isomers from Momordica Plant Species

Figure 4

Representative mass spectra showing the major fragmentation differences at m/z 191 noted between trans and cis isomers of all CGA detected in Momordica species. The exact mass of m/z 191 and its proposed elemental formula are indicated in Table 1.