Table 2.
Pearson correlation analyses between different antioxidant activity, total phenolic content, and total flavonoid content.
| TPC | FRAP | TFC | DPPH | MIC | ABTS | |
|---|---|---|---|---|---|---|
| TPC | 1 | |||||
| FRAP | 0.936 ** | 1 | ||||
| TFC | 0.863 ** | 0.940 ** | 1 | |||
| DPPH | 0.234 | 0.34 8 ** | 0.375 ** | 1 | ||
| MIC | 0.911 ** | 0.921 ** | 0.939 ** | 0.359 * | 1 | |
| ABTS | 0.541 ** | 0.530 ** | 0.464 ** | 0.013 | 0.453 ** | 1 |
** Correlation is significant at the 0.01 level; * Correlation is significant at the 0.05 level; TPC, total phenolic content; TFC, total flavonoid content; FRAP, ferric reducing antioxidant power; DPPH, 2,2-diphenyl-1-picrylhydrazyl; ABTS•+, 2,2′-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid; MIC, metal ion chelation activity.