Table 3.
Betacyanins of A. caudatus flower extract chromatographic identification (retention time (Rt)), wavelengths of maximum absorption in the visible region (λmax), and mass spectral data (MS), and quantification (mg/g extract).
| Peak | Rt (min) | λmax (nm) | [H]+ (m/z) | MS2 | Tentative Identification | Quantification mg/g Extract |
|---|---|---|---|---|---|---|
| 1 | 18.68 | 536 | 727 | 551(100), 389(40) | Amaranthine | 171 ± 1 |
| 2 | 20.02 | 536 | 727 | 551(100), 389(27) | Isoamaranthine | 38 ± 1 |
| 3 | 22.04 | 536 | 551 | 389(100) | Betanin | 1.6 ± 0.1 |
| 4 | 23.23 | 536 | 551 | 389(100) | Isobetanin | 1.3 ± 0.1 |
| Total | 212 ± 1 |