Table 2.
High-resolution mass spectrometric data and elemental composition of GD (negative ion mode).
| No. | Component name | Retention time | Found at mass | Mass error (ppm) | Formula |
|---|---|---|---|---|---|
| 1 | Quinic acid | 1.23 | 191.0562 | 0.5 | C7H12O6 |
| 2 | Uridine | 2.23 | 243.0623 | 0.2 | C9H12N2O6 |
| 3 | Adenosine | 2.44 | 266.0896 | 0.3 | C10H13N5O4 |
| 4 | Chlorogenic acid | 4.97 | 353.0877 | −0.3 | C16H18O9 |
| 5 | Caffeic acid | 5.57 | 179.0351 | 0.8 | C9H8O4 |
| 6 | Methyl chlorogenate | 6.31 | 367.1033 | −0.3 | C17H20O9 |
| 7 | Isoferulic acid | 7.32 | 193.0504 | −1 | C10H10O4 |
| 8 | Kaempferol-3-O-rutinoside | 7.53 | 593.151 | −0.4 | C27H30O15 |
| 9 | Astragalin | 7.87 | 447.093 | −0.7 | C21H20O11 |
| 10 | Dicaffeoylquinic acid (Cynarin) | 8.26 | 515.119 | 0 | C25H24O12 |