Table 5.
Characterization of secondary metabolites by HPLC–ESI–MS analysis
| Peak no | Tentative identity | RT (min) | [M-H]− (m/z) | MS2 ion fragment (m/z) |
|---|---|---|---|---|
| 1 | Not identified | 3.77 | 352.8 | 334.8; 324.9; 316.9; 298.9; 260.9; 254.8; 219.1 |
| 2 | Maltose | 4.7 | 341.0 | 323.1; 179.1; 161.1; 143.1; 118 |
| 3 | Maltose | 5.31 | 341.0 | 323; 300.6; 179.2; 161.1 |
| 4 | Not identified | 7.17 | 290.0 | 254.1; 229.9; 214; 200; 128.1 |
| 5 | Not identified | 8.88 | 150.9 | 131.2 |
| 6 | Not identified | 9.55 | 242.9 | 199.9; 110 |
| 7 | Not identified | 14.23 | 282.0 | 150.1; 133 |
| 8 | Not identified | 15.52 | 385.9 | 343; 298.9; 297.9; 286 |
| 9 | Oosporein | 31.25 | 304.9 | 276.9; 262; 261; 249; 233; 217; 205; 189.1;161.1 |
Abbreviations: RT retention time