Table 4.
Carotenoid profiles based on the LC-MS data of the extract of the nutrient-depleted condition from Coelastrum sp. TISTR 9501RE in a 20,000-L open raceway pond (a representative set of data from three experiments).
| Entry | Identity | Retention Time * | Proposed Formula | Precursor Mass | Found at Mass | Mass Error (ppm) |
|---|---|---|---|---|---|---|
| 1 | All-trans-astaxanthin | 16.21 | C40H52O4 | 597.3938 | 597.3935 | −0.60 |
| 2 | All-trans-lutein | 19.32 | C40H56O2 | 569.4353 | 569.4351 | −0.39 |
| 3 | Chlorophyll b | 19.32 | C55H70N4O6Mg | 907.5219 | 907.5227 | 0.88 |
| 4 | All-trans-Canthaxanthin | 23.44 | C40H52O2 | 565.4040 | 565.4044 | 0.65 |
| 5 | Chlorophyll a | 25.64 | C55H72N4O5Mg | 893.5426 | 893.5434 | 0.95 |
* Data from the HPLC-PDA run.