Table 1.
Identification and quantification of major chemical compounds in WCC, WCCE1, and WCCE2.
| [M−H]-m/z | [M+H]-m/z | Compound | MS/MS | Concentration (% w/w) | ||
|---|---|---|---|---|---|---|
| WCC | WCCE1 | WCCE2 | ||||
| 353.09 | - | 3-CQA | 135, 179, 191 | 1.02 ± 0.26 | 8.19 ± 0.10 | 1.22 ± 0.00 |
| 353.09 | - | 5-CQA | 191 | 2.95 ± 0.32 | 14.38 ± 0.07 | 2.30 ± 0.01 |
| 353.09 | - | 4-CQA | 135, 173, 179, 191 | 1.17 ± 0.16 | 9.41 ± 0.71 | 1.31 ± 0.00 |
| 367.10 | - | 5-FQA | 173, 191 | 0.41 ± 0.12 | 3.38 ± 0.01 | 0.28 ± 0.00 |
| 367.10 | - | 4-FQA | 173, 193, 191 | 0.18 ± 0.07 | 2.23 ± 0.02 | 0.16 ± 0.00 |
| 515.12 | - | 3,4-diCQA | 173, 179, 191, 353 | 0.39 ± 0.17 | 3.43 ± 0.01 | 0.33 ± 0.00 |
| 515.12 | - | 3,5-diCQA | 135, 179, 191, 353 | 0.23 ± 0.08 | 1.8 ± 0.00 | 0.17 ± 0.00 |
| 515.12 | - | 4,5-diCQA | 173, 179, 191, 353 | 0.41 ± 0.16 | 3.64 ± 0.01 | 0.33 ± 0.00 |
| Total chlorogenic acid | 6.76 ± 1.34 | 46.46 ± 0.93 | 6.1 ± 0.01 | |||
| - | 138.05 | Trigonelline | 94 | 0.4 ± 0.00 | 2.40 + 0.09 | <0.01 |
| - | 195.09 | Caffeine | 138 | 1.12 ± 0.17 | 0.90 ± 0.00 | 73.60 ± 0.65 |