Table 4.
Concentrations of tryptophan (Trp), tryptamine (Trm), serotonin (Ser), N-acetylserotonin (NAS) and melatonin (Mel) in tissues studied in this validation.
| Species | Tissue | Mean concentration in tissue (standard error) | ||||
|---|---|---|---|---|---|---|
| Trp (μg/gFW) | Trm (μg/g FW) | Ser (μg/g FW) | NAS (ng/g FW) | Mel (ng/g FW) | ||
| SJW | Shoot | 164.8 (25.4) | 1.51 (0.31) | nd | nd | 32.5 (1.70) |
| Root | 15.2 (2.8) | 0.599 (0.057) | nd | nd | 9.72 (1.12) | |
| African violet | Shoot | 58.9 (18.2) | 0.508 (0.085) | nd | nd | nd |
| Banana | Shoot | 91.2 (12.3) | 0.627 (0.063) | 7.17 (1.68) | nd | 16.81 (2.2) |
| Root | 20.2 (5.0) | 0.486 (0.008) | 34.17 (6.36) | nd | nd | |
| Elm | Shoot | 16.7 (1.7) | nd | nd | nd | nd |
| Tobacco | Shoot | 16.3 (2.2) | 0.721 (0.069) | nd | nd | nd |
| Root | 4.5 (1.9) | nd | nd | 77.1 (9.9) | nd | |
| Potato | Shoot | 39.1 (5.3) | 0.719 (0.17) | nd | 330 (86.4) | 40.05 (1.85) |
| Artemisia | Shoot | 29.9 (5.9) | nd | nd | nd | nd |
| Root | 15.1 (1.1) | nd | nd | nd | nd | |
| Fennel | Seed | 24.43 (2.73) | 0.0733 (0.0126) | nd | nd | 33.30 (13.0) |