Optimization Studies on the Extraction of Flavone Di-C-glycosides from Premna fulva Craib by Deep Eutectic Solvents

Table 1

List of the choline chloride-based DESs synthesized in this work.

No.	Abbreviation	HBA	HBD	Molar ratio	Appearance
1	DES-A	Choline chloride (ChCl)	Mannose	1 : 1	Colorless viscous liquid
2	DES-B		D-Fructose	1 : 1	Colorless viscous liquid
3	DES-C		Glucose	1 : 1	Light white viscous liquid
4	DES-D		Xylose	1 : 1	Colorless viscous liquid
5	DES-E		Glycerol	1 : 2	Colorless liquid
6	DES-F		1,3-Propanediol	1 : 2	Colorless liquid
7	DES-G		Levulinic acid	1 : 2	Light yellow liquid
8	DES-H		Glycolic acid	1 : 2	Colorless liquid
9	DES-I		D-Lactic acid	1 : 2	Colorless liquid
10	DES-J		Malonic acid	1 : 2	Colorless liquid
11	DES-K		Tartaric acid	1 : 2	Colorless liquid
12	DES-L		Citric acid	1 : 2	Colorless viscous liquid
13	DES-M		Urea	1 : 2	Colorless liquid