Table 1.
Tentative identification of the constituents of C. sinensis bioactive fraction. Data show tentative identification of compounds within the bioactive fraction of C. sinensis extract from published literature and publicly accessible online databases, monoisotopic mass m/z, chemical formula, and peak area of each compound at a particular retention time (Rt)
| No. | Rt (min) | m/z [M + H]+ | Peak area (%) | Chemical formula | Tentative identification |
|---|---|---|---|---|---|
| 1 | 0.84 | 158.0822 | 2.1269 | –a | Unknownb |
| 2 | 3.06 | 195.0919 | 7.0454 | C8H11N4O2 | Caffeine |
| 3 | 4.42 | 303.0516 | 4.9190 | C15H10O7 | Quercetin |
| 4 | 5.10 | 287.0566 | 6.0235 | C15H10O6 | Kaempferol |
| 5 | 8.52 | 903.2551 | 1.4543 | C42H46O22 | Kaempferol rhamnoside |
| 6 | 8.56 | 887.2620 | 0.6415 | C42H46O21 | Kaempferol rhamnosyl glucoside |
| 7 | 16.00 | 621.2712 | 6.3769 | − | Unknown |
| 8 | 16.15 | 593.2830 | 15.2641 | C31H28O12 | Proanthocyanidin |
| 9 | 16.52 | 607.2932 | 9.4702 | C36H38N4O5 | Phenyl peptide |
| 10 | 21.44 | 954.6154 | 2.3624 | – | Unknown |
a–Represents missing chemical formula for the compounds with serial number 1, 7 and 10
b‘Unknown’ means that compound was unidentifiable from searched databases and published literature