Table 3.
Identification of the compounds of ZEF and ZBF on single-dimension UPLC-MS
| Sample | Retention time (min) | [M−H]− (m/z) | Identification |
| ZEF | 15.08 | 471 | (−)-Epigallocatechin 3-O-(4''-O-methyl) gallate |
| 20.73 | 563 | Theaflavin | |
| ZBF | 6.74 | 190 | Quinic acid |
| 14.31 | 479 | Myricetin-3-O-galactose | |
| 14.80 | 771 | Quercetin-3-O-galactose-rutinoside | |
| 14.97 | 593 | Kaempferol-3-O-p-coumaroyl-glucose | |
| 15.09 | 771 | Quercetin-3-O-glucose-rutinoside | |
| 16.14 | 755 | Kaempferol-3-O-galactose-rutinoside | |
| 19.58 | 1049 | Quercetin-3-O-glucose-rhamnose-(p-coumaroyl-arabinose)-hexoside | |
| 20.45 | 1033 | Galloylated prodelphinidin | |
| 20.73 | 563 | Theaflavin |