Table 3.
Pearson correlation coefficient among phenolic profiles, contents and total and cellular antioxidant activities.
| Correlation | ORAC | CAA No-PBS Wash | CAA PBS Wash | TPC | TFC | Thermal Processes |
|---|---|---|---|---|---|---|
| ORAC | - | 0.40 | 0.23 | 0.59 * | 0.17 | 0.78 ** |
| CAA No-PBS wash | - | - | 0.12 | 0.16 | 0.11 | 0.21 |
| CAA PBS wash | - | - | - | 0.10 | 0.16 | −0.44 * |
| TPC | - | - | - | - | 0.61 ** | 0.56 * |
| TFC | - | - | - | - | - | 0.18 |
| TFA | 0.24 | 0.36 | 0.07 | 0.65 ** | 0.42 | 0.41 |
| TCA | 0.82 ** | 0.70 ** | 0.42 | 0.55 ** | 0.25 | 0.66 ** |
| TGA | −0.30 | 0.05 | −0.15 | −0.13 | 0.06 | −0.84 ** |
| TVA | 0.29 | 0.35 | 0.06 | 0.63 ** | 0.68 ** | 0.40 |
| TS | −0.29 | 0.05 | 0.39 | −0.62 ** | −0.51 * | −0.57 * |
| TQ | −0.19 | −0.14 | 0.17 | −0.69 ** | −0.39 | −0.01 |
| TPA | −0.29 | −0.49 * | −0.55 * | −0.08 | 0.12 | 0.19 |
Note: The phenolic profiles are TPC (total phenolics), TFC (total flavonoids), TFA (total ferulic acid), TCA (total chlorogenic acid), TGA (total gallic acid), TVA (total vanillic acid), TS (total syringate), TQ (total quercetin), TPA (total p-coumaric acid). Total = free + bound * and ** mean correlation is significant at the 0.05 and 0.01 level respectively (2-tailed).