Table 1.
HPLC-DAD and HPLC-MS analysis of EPCh.
| Name | Retention time (min) | λ max (nm) | Parent ion (m/z) [M-H]− | Relative error (ppm) | |
|---|---|---|---|---|---|
| HPLC-DAD | HPLC-MS | ||||
| Naringin | 5.71 | 17.116 | 214, 282 | 315.8400 | 2.98 |
| Naringenin | 7.88 | 24.071 | 290, 325 (sh) | 271.0621 | −3.18 |
| Kaempferol | 8.31 | 26.892 | 200, 266, 366 | 285.0412 | −2.58 |
| Quercetin | 8.94 | 23.158 | 256, 372 | 301.0361 | −2.48 |
| Acacetin | 9.40 | 32.32 | 210, 268, 324 | 283.0619 | −2.32 |
| Luteolin | 10.05 | 22.51 | 252, 348 | 285.0774 | −1.98 |
| Pinocembrin | 14.82 | 30.378 | 290 | 255.0672 | −3.34 |
| Chrysin | 17.58 | 31.175 | 268, 314 | 253.0509 | −1.18 |