Table 3.
Correlation between polyphenol compositions antioxidant capacities.
| Total polyphenols | Total flavonoids | Punicalagin-α | Punicalagin-β | Ellagic acid | Gallic acid | DPPH assay | ABTS assay | Fe2+ chelating activity | FRAP assay | |
|---|---|---|---|---|---|---|---|---|---|---|
| Total polyphenols | 1.00 | |||||||||
| Total flavonoids | .987 | 1.00 | ||||||||
| Punicalagin-α | .986 | .972 | 1.00 | |||||||
| Punicalagin-β | .977 | .964 | .998 | 1.00 | ||||||
| Ellagic acid | .995 | .988 | .994 | .987 | 1.00 | |||||
| Gallic acid | .979 | .954 | .996 | .992 | .987 | 1.00 | ||||
| DPPH assay | -.908 | -.892 | -.908 | -.906 | -.908 | -.906 | 1.00 | |||
| ABTS assay | -.987 | -.975 | -.992 | -.988 | -.992 | -.988 | .949 | 1.00 | ||
| Fe2+ chelating activity | -.977 | -.966 | -.982 | -.978 | -.982 | -.981 | .947 | .995 | 1.00 | |
| FRAP | .966 | .946 | .994 | .998 | .977 | .993 | -.898 | -.981 | -.972 | 1.00 |
The results are expressed as Pearson's coefficient (p value).