ABTS	2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid
ANOVA	Analysis of variance
DI	Deionized
DMSO	Dimethyl sulfoxide
DW	Dry weight
FBS	Fetal bovine serum
GA	Gallic acid
GAE	Gallic acid equivalent
l	Light path
MW	Molecular weight
MSI	Metabolic Standard Initiative
MTT	3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide
OD	Optical density
PBMC	Peripheral blood mononuclear cell
Q	Quercetin
QE	Quercetin equivalent
ROS	Reactive oxygen species
SD	Standard deviations
TBC	Total betalain content
TFC	Total flavonoid content
TPC	Total phenolic content
Trolox	6-Hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid
UHPLC-ESI-QTOF-MS	Ultra-high pressure liquid chromatography–electrospray ionization–quadrupole time-of-flight mass spectrometry
WW	Wet weight
ε	Molar extinction coefficient