% FRS	Percent Free Radical Scavenging
AAPH	2,2′-Azobis(2-methylpropionamidine) dihydrochloride
ACN	Acetonitrile
AUC	Area Under the Curve
ANOVA	Analysis of Variance
CAT	Chemometric Agile Tool
CC (cc)	Cubic Centimeter
CI	Confidence Interval
CO2	Carbon Dioxide
DAD/PDA	(UV-Vis) Photodiode Array Detector
DCFH–DA	2′,7′-Dichlorodihydrofluorescein Diacetate
DCM	Dichloromethane
DMEM	Dulbecco’s Modified Eagle’s Medium
DMSO	Dimethyl Sulfoxide
DoE	Design of Experiments
DW	Dry Weight
FBS	Fetal Bovine Serum
GA	Gallic Acid
H2O2	Hydrogen Peroxide
HaCaT	Human Adult Keratinocyte Cell Line
HLB	Hydrophilic–Lipophilic Balanced
HPLC	High-Performance Liquid Chromatography
ICH Q2(R2)	International Council for Harmonisation, Q2(R2)
IC50	Half-Maximal Inhibitory Concentration
MAE	Microwave-Assisted Solvent Extraction
MeOH	Methanol
MTT	3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide
Na2CO3	Sodium Carbonate (anhydrous)
nm	Nanometer
OD	Optical Density
ORAC	Oxygen Radical Absorbance Capacity
PBS	Phosphate-Buffered Saline
PSI	Pound per Square Inch
QL	Quantification Limit
ROS	Reactive Oxygen Species
SD	Standard Deviation
SPE	Solid-Phase Extraction
TE	Trolox Equivalents
TPC	Total Phenolic Content
Trolox	(±)-6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid
UHPLC	Ultra-High-Performance Liquid Chromatography
UAE	Ultrasound-Assisted Extraction
UV-Vis	Ultraviolet–Visible
W	Watt