Research Article

Phytochemical Characterization, In Vitro Antioxidant Activity, and Quantitative Analysis by Micellar Electrokinetic Chromatography of Hawthorn (Crataegus pubescens) Fruit

Figure 2

Fragmentation ions MS/MS in positive mode of procyanidins detected in Crataegus pubescens extracts. (a) Procyanidin dimer (m/z 579.1); (b) procyanidin trimer (m/z 867.2); (c) procyanidin tetramer (m/z 1153.2).
(a)
(b)
(c)