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Correlation coefficients, r, for relationships between phenolic contents (PC) and antioxidant activity.a
| PC | ABTS | DPPH | O2− | |
|---|---|---|---|---|
| ABTS | −0.855 | |||
| DPPH | −0.728 | 0.977 | ||
| O2− | −0.753 | 0.984 | 0.997 | |
| FRAP | 0.999 | −0.837 | −0.703 | −0.731 |
ABTS = 2,2′-azino-bis (3-ethylbenzothioazoline-6-sulphonic acid); DPPH = 2,2-diphenyl-1-picrylhydrazyl; FRAP = ferric reducing antioxidant power.
Correlation coefficients were calculated using EC50 values for ABTS, DPPH and O2−.
