Table 4.
Different functional groups and possible phytochemical constituents identified using FTIR in the hydroethanolic extract of W. somnifera.
| Wavenumber (cm−1)/possible functional groups | W. somnifera |
|---|---|
| 4000–2500/cm O-H, N-H, C-H Stretch vibration |
3845 |
| 3810 | |
| 3774 | |
| 3697 | |
| 3636 | |
| 2500–2000/cm C≡C, C≡N Stretch vibration |
2359 |
| 2342 | |
| 2000–1500/cm C=C, C=O, C=N Stretch vibration |
1958 |
| 1725 | |
| 1710 | |
| 1659 | |
| 1585 | |
| 1500–400/cm C-C, C-N, C-O, C-Cl, C-I, S-S, N=O* Stretch, bend, or scissoring, rock vibration |
1493 |
| 1462 | |
| 1427 | |
| 1293 | |
| 1021 | |
| 727 | |
| 694 | |
| 668 | |
| 437 | |
| 410 |