PAC	proanthocyanidin
(D)ES	(deep) eutectic solvent
HBA	hydrogen bond acceptor
HBD	hydrogen bond donor
mDP	mean degree of polymerization
%Gal	galloylation percentage
HPLC	High-Performance Liquid Chromatography
DAD	Diode-Array Detector
HWE	hot water extraction
HSE	hot sulfite extraction
AAE	aqueous acetone extraction
AEE	aqueous ethanol extraction
BM	biomass
ChCl	choline chloride
Bet	betaine
Pro	proline
Ur	urea
MalA	malic acid
Glu	glucose
Glyc	Glycerol
RSM	Response Surface Methodology