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Chromatographic and UV/Vis spectroscopic characteristics of geometrical isomers of astaxanthin.
| Number | Name | Retention Time (Minutes) | Maximum Wavelength (nm) |
|---|---|---|---|
| 1 | Z-isomer | 7.50 | 465 |
| 2 | Z-isomer | 7.51 | 458 |
| 3 | Z-isomer | 7.91 | 368 |
| 4 | Z- isomer | 9.18 | 370 |
| 5 | (all-E)-astaxanthin | 10.18 | 477 |
| 6 | Z-isomer | 11.06 | 470 |
| 7 | Z-isomer | 13.07 | 470 |
