Table 3.
EC50 values of antioxidant activity for crude extracts, isolated spinochromes and Trolox. EC50 values for isolated spinochromes and Trolox are presented in μM and are converted into μG/mL to compare them with crude extracts.
| Antioxidant Activity | ||
|---|---|---|
| EC50—DPPH Inhibition | ||
| Sea Urchin Crude Extracts | (μG/mL) | |
| E. mathaei | 35.63 | |
| D. savignyi | 34.46 | |
| T. gratilla | >400 | |
| T. pileolus | >400 | |
| Isolated Spinochromes | (μM) | (μG/mL) |
| Echinochrome A/Spinochrome C | 16.31 | 4.40 |
| Spinochrome A | 22.17 | 5.85 |
| Spinochrome B | 29.38 | 6.52 |
| Spinochrome E | 10.85 | 2.76 |
| Trolox (μM) | 20.88 | 5.22 |