Table 2.
IC50 values of 2,2-diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant power (FRAP) values and corresponding TE values for different flavonoids and BSA-flavonoids with the DPPH assay and FRAP assay.
| DPPH IC50 (μmol L−1) |
TEDPPH | FRAP Value (μmol L−1 FeSO4·7H2O) |
TEFRAP | |
|---|---|---|---|---|
| Quercetin | 9.61 ± 0.86 | 4.58 | 131.24 ± 4.50 | 1.20 |
| BSA-quercetin | 9.16 ± 0.46 | 4.81 | 123.57 ± 10.43 | 1.13 |
| Morin | 128.04 ± 5.37 | 1.17 | ||
| BSA-morin | 152.74 ± 8.74 | 1.39 | ||
| Fisetin | 10.33 ± 0.52 | 4.26 | 130.01 ± 3.13 | 1.19 |
| BSA-fisetin | 9.26 ± 0.44 | 4.75 | 121.45 ± 26.36 | 1.11 |
| Myricetin | 10.48 ± 0.44 | 4.20 | 123.60 ± 4.73 | 1.13 |
| BSA-myricetin | 12.45 ± 0.55 | 3.54 | 127.58 ± 4.85 | 1.16 |
| Kaempferol | 33.54 ± 8.79 | 1.31 | 90.77 ± 3.43 | 0.82 |
| BSA-kaempferol | 40.77 ± 2.20 | 1.08 | 119.71 ± 8.32 | 1.09 |
| Galangin | 39.64 ± 3.26 | 0.36 | ||
| BSA-galangin | 53.87 ± 10.25 | 0.49 | ||
| Catechin | 29.30 ± 6.34 | 1.50 | 91.98 ± 3.00 | 0.84 |
| BSA-catechin | 12.50 ± 0.44 | 3.52 | 122.31 ± 5.86 | 1.12 |
| Trolox | 44.02 ± 3.63 | 1.00 | 109.61 ± 2.91 | 1 |