Table 1.
HPLC and ESI‐MS/MS characteristics and identification of known and minor betalains detected after the growth of Escherichia coli expressing 4,5‐DODA in different media
| Rt (min) | Name | Media | PDA‐λm (nm) | [M+H]+ (m/z) | Main daughter ion (m/z) |
|---|---|---|---|---|---|
| 9.2 | — | LB | 471 | 235.1 | 162.0 |
| 13.9 | Dopaxanthin | LB/NZCYM | 471 | 391.1 | 347.1 |
| 14.9 | Betalamic acid | LB/NZCYM | 405 | 212.1 | 166.1 |
| 16.7 | Muscaflavin | LB | 405 | 212.1 | 166.0 |
| 20.5 | — | LB | 471 | 385.2 | 215.0 |
| 21.7 | — | LB/NZCYM | 471 | 326.8 | 244.0 |
| 22.8 | — | LB/NZCYM | 471 | 374.8 | 365.6 |
| 26.1 | — | LB/NZCYM | 471 | 288.8 | 251.1 |
| 26.9 | — | LB/NZCYM | 471 | 411.4 | 385.1 |