Table 6.
Analysis of the correlation of the bound phenolic composition and content with the antioxidant activity.
| BP | BF | TPA | DPPH | FRAP | ABTS | |
|---|---|---|---|---|---|---|
| BP | 1 | 0.303 | −0.152 | 0.212 | 0.718 ** | 0.576 ** |
| BF | 0.303 | 1 | 0.303 | 0.364 | 0.198 | 0.485 * |
| Phl | −0.052 | 0.327 | 0.465* | 0.155 | 0.052 | −0.017 |
| Chl | 0.359 | 0.200 | 0.240 | 0.200 | 0.141 | 0.479 * |
| Van | 0.449 | 0.270 | 0.180 | 0.135 | 0.249 | 0.539 * |
| Pco | −0.121 | 0.273 | 0.667 ** | 0.182 | −0.290 | 0.061 |
| Fer | 0.606 * | 0.333 | −0.182 | 0.001 | 0.443 * | 0.545 * |
| Dim | −0.242 | 0.091 | 0.364 | 0.121 | −0.504 * | −0.364 |
| Hes | −0.303 | −0.091 | 0.364 | −0.242 | −0.260 | −0.485 * |
| Myr | −0.364 | −0.091 | 0.545 * | −0.182 | −0.412 | −0.303 |
| Que | 0.515 * | 0.424 | 0.152 | 0.455 * | 0.351 | 0.758 ** |
| Nari | 0.311 | 0.023 | 0.626 ** | 0.088 | 0.086 | 0.302 |
| Rut | 0.516 * | 0.121 | −0.152 | 0.273 | 0.351 | 0.576 ** |
| DPPH | 0.212 | 0.364 | 0.152 | 1 | 0.107 | 0.455 * |
| FRAP | 0.718 ** | 0.198 | −0.198 | 0.107 | 1 | 0.412 |
| ABTS | 0.576 ** | 0.485 * | 0.091 | 0.455 * | 0.412 | 1 |
The correlation coefficients was calculated according to the Pearson method; ** indicates significance p < 0.01, * indicates significance p < 0.05; BP, bound phenolic ; BF, bound flavonoid; DPPH, DPPH• scavenging activity; FRAP, FRAP antioxidant activity ; ABTS, ABTS•+ scavenging activity; TPA, total phenolic acid; Phl, phloroglucinol; Chl, chlorogenic acid; Van, vanillic; Pco, p-coumaric; Fer, ferulic acid; Dim, 3,4-dimethoxybenzoic acid; Hes, hesperidin; Myr, myricetin; Que, quercetin; Nari, naringenin; Rut, rutin.