Table 4 Compounds detected in fenugreek seed extract with their retention times, UV spectra and mass spectral data.
N° | Flavonoid | Retention time (min) | UV λ max (nm) | [M+H]+ (m/z)a | [I+H]+ (m/z)b | [A+H]+ (m/z)c |
|---|---|---|---|---|---|---|
1 | 4-hydroxy-isoleucine | 1.6 | 260 | 148 | - | - |
2 | Kaempferol 3-O-glucoside | 8.7 | 265, 345 | 449 | - | 287 |
3 | Apigenin 7-O-rutinoside | 12.3 | 338, 266 | 579 | 433 | 271 |
4 | Naringenin | 13 | 288, 330 | 273 | - | - |
5 | Quercetin | 2 | 371, 255 | 303 | - | - |
6 | Vitexin | 9.1 | 268, 336 | 433 | 341 | - |