| DPPH | 2,2-diphenyl-1-picrylhydrazyl radical |
| HAT | hydrogen atom transfer |
| HRP | horseradish peroxidase |
| ICA | intramolecular conjugate addition reaction |
| NRT | natural resonance theory |
| ROS | reactive oxygen species |
| UPLC-ESI-Q-TOFMS | ultra-performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight tandem mass spectrometry |