Table 6.
Pearson′s correlation between phenolic contents and antioxidant activities.
| Variates | Coefficient of Correlation | |
|---|---|---|
| IC50 of DPPH Radical Scavenging | FRAP Antioxidant Activity | |
| IC50 of DPPH radical scavenging (n = 39) | −0.672 ** | |
| FRAP antioxidant activity (n = 39) | −0.672 ** | |
| Gallic acid content (n = 30) | −0.308 | 0.274 |
| Gallocatechin content (n = 39) | 0.104 | −0.088 |
| Catechol content (n = 27) | −0.066 | 0.358 |
| Catechin content (n = 39) | −0.332 * | 0.473 ** |
| Epicatechin content (n = 34) | −0.433 * | 0.103 |
** means the significance level of p< 0.001, and * means the significance level of p < 0.05.