Table 1.

Different types of deep eutectic solvent (DES) selected.

DES Groups	Component 1	Component 2	Molar Ratio
DES-1	choline chloride	urea	1:2
DES-2	choline chloride	1,2-propanediol	1:2
DES-3	choline chloride	ethylene glycol	1:2
DES-4	choline chloride	citric acid	1:2
DES-5	choline chloride	malic acid	1:2
DES-6	ethylene glycol	malonate	1:2
DES-7	1,2-propanediol	glycolic acid	1:2
DES-8	ethylene glycol	glycolic acid	1:2