Research Article
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 |
|
|