Research Article
Optimization of Deep Eutectic Solvents Extraction of Effective Components from Phellodendron chinense Schneid by Response Surface Methodology
Table 1
Sources of hydrogen bond donor.
| | Num. | Kind of hydrogen bond donor | Manufacturer | Mole ratio |
| | 1 | Xylitol | Zhengzhou #Angyuan Chemical Products Co., Ltd. | 1 : 1 | | 2 | Urea | Tianjin Ruijinte Chemical Co., Ltd. | 1 : 2 | | 3 | Acetic acid | Xilong Science Co., Ltd. | 1 : 2 | | 4 | Citric acid | Zhengzhou Kangyuan Chemical Products Co., Ltd. | 1 : 2 | | 5 | Phenol | Xilong Science Co., Ltd. | 1 : 3 | | 6 | Glycerol | Guangzhou Miya Cosmetics co., Ltd. | 1 : 2 | | 7 | Propylene glycol | Tianjin Zhonghe Shengtai Chemical Co., Ltd. | 1 : 2 | | 8 | Maltose | Zhengzhou Kangyuan Chemical Products Co., Ltd. | 1 : 1 | | 9 | Malic acid | Zhengzhou Kangyuan Chemical Products Co., Ltd. | 1 : 1 | | 10 | Lactic acid | Zhengzhou Kangyuan Chemical Products Co., Ltd. | 1 : 2 | | 11 | Fructose | Zhengzhou Kangyuan Chemical Products Co., Ltd. | 1 : 1 |
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