2-NBDG	2-(N-(7-Nitrobenz-2-oxa-1,3-diazol-4-yl)amino)-2-deoxyglucose
BBD	Box–Behnken Design
DCFH-DA	2′,7′-Dichlorodihydrofluorescein diacetate
DOTAP	1,2-Dioleoyloxy-3-trimethylammonium propane chloride
DPPH	2,2-Diphenyl-1-picrylhydrazyl
FRAP	Ferric Reducing Antioxidant Power
MD	Mean Diameter
mg GAE/g	milligrams of Gallic Acid Equivalents per gram of dry extract
mg TE/g	milligrams of Trolox Equivalents per gram of dry extract
MTT	3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide
NAC	N-acetyl-L-cysteine
OE	Optimized olive leaf extract
OE Eu-LIP	Optimized olive leaf extract in Eu-liposomes
OE sol	Optimized olive leaf extract in solution
P90G	Phospholipon® 90G
PBS	Phosphate Buffered Saline
PI	Polydispersity Index
RSM	Response Surface Methodology
SGF	Simulated Gastric Fluid
SIF	Simulated Intestinal Fluid
T2DM	Type 2 diabetes mellitus
TPC	Total Phenolic Content
TPTZ	2,4,6-Tripyridyl-s-triazina
Trolox	6-Hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid
USP	United States Pharmacopoeia
ZP	Zeta Potential