Table 3.
Pearson’s correlation coefficients (ρ) of phenolic compounds and antioxidant capacity
| ρ | TPC | TFC | CTC | HTC | CTAC | CDPPH | CR | CAnti-β-carotene bleaching |
|---|---|---|---|---|---|---|---|---|
| TPC | 1 | 0.996 | 0.949 | 0.787 | 0.976 | −0.221 | −0.268 | −0.396 |
| TFC | 1 | 0.968 | 0.803 | 0.989 | −0.166 | −0.213 | −0.328 | |
| CTC | 1 | 0.870 | 0.978 | −0.059 | −0.101 | −0.245 | ||
| HTC | 1 | 0.775 | −0.244 | −0.288 | −0.173 | |||
| CTAC | 1 | −0.026 | −0.071 | −0.294 | ||||
| CDPPH | 1 | 0.998 | 0.259 | |||||
| CR | 1 | 0.295 | ||||||
| CAnti-β-carotene bleaching | 1 |
TPC Total phenolic content, TFC Total flavonoid content, CTC Condensed tannin content, HTC Hydrolysable tannin content, C TAC Coefficient of total antioxidant capacity, C DPPH Coefficient of DPPH radical scavenging activity, C R Coefficient of reducing power, C Anti - β-carotene bleaching Coefficient of antioxidant activity determined with β-carotene bleaching test