Table 2.
Characterization of PBP.
| Peak | t R (min) | Tentative compounds | Peak area ratio (%) | Main MS2 (m/z) | [M-H]− (m/z) |
|---|---|---|---|---|---|
| P1 | 8.22 | Chlorogenic acid | 52.22 | 191 | 353.0872 |
| P2 | 8.99 | Cryptochlorogenic acid | 8.28 | 135, 173, 179, 191 | 353.0874 |
| P3 | 9.40 | 3,4,5-Trimethoxyphenyl-1-O-β-D-xylopyranosyl-β-D-glucopyranoside | 2.31 | 293, 233, 161, 153, 89, 59 | 477.1605 |
| P4 | 10.82 | cis-form-5-coffee acylchlorogenic acid | 8.62 | 191 | 353.0875 |
| P5 | 17.17 | Isoquercetin | 4.34 | 271, 255 | 463.0874 |
| P6 | 21.1 | 4,5-Dicaffeoylquinic acid | 2.83 | 353, 191, 179, 173 | 515.1193 |