ABTS	2,2′-azino-bis (3-ethylbenzo-thiazoline-6-sulfonic acid) diammonium salt
DPPH•	1,1-diphenyl-2-picryl-hydrazl
ET	electron-transfer
FBS	fetal bovine serum
FRAP	ferric reducing antioxidant power
HAT	hydrogen atom transfer
ROS	reactive oxygen species
RAF	radical-adduct-formation
SD	standard deviation
TPTZ	2,4,6-tris(2-pyridyl-s-triazine)
Trolox	(±)-6-hydroxyl-2,5,7,8-tetramethlychromane-2-carboxylic acid