Table 1.
Comparison of the slopes of the absorbance measurements, correlation coefficients and calculated EC50 values of the different microalgae samples.
| High DPPH concentration (76 μM | Low DPPH concentration (38 μM) | |||||
|---|---|---|---|---|---|---|
|
| ||||||
| Microalgae | Slope [μmol DPPH g−1extract] | R | EC50 [g extract] | Slope [μmol D] | R2 | EC50 [g extract] |
| Anabaena sp. | 34.45 | 0.994 | 1.103 | 31.74 | 0.998 | 0.599 |
| Isochrysis galbana | 29.51 | 0.986 | 1.288 | 28.27 | 0.977 | 0.672 |
| Synechocystis sp. PCC6803 | 19.97 | 0.992 | 1.902 | 19.24 | 0.969 | 0.988 |
| Phaeodactylum triconutum | 20.58 | 0.968 | 1.847 | 18.71 | 0.996 | 1.016 |
| Porphyridium purpureum | 7.26 | 0.978 | 5.234 | 5.97 | 0.992 | 3.182 |
| α Tocopherol | 3300.3 | 0.999 | 0.0115 | |||