Table 4 The frequency of critical factors
From: Research progress on the ethanol precipitation process of traditional Chinese medicine
| No. | Critical factors | Research frequency |
|---|---|---|
| 1 | Φ | 36 |
| 2 | ρ | 31 |
| 3 | t | 16 |
| 4 | DE | 12 |
| 5 | Ce | 9 |
| 6 | T | 8 |
| 7 | Cc | 5 |
| 8 | CR | 4 |
| 9 | SS | 4 |
| 10 | WCc | 4 |
| 11 | SCc | 3 |
| 12 | Others | 6 |