Assays | (+) taxifolin | Trolox | Ratio value |
|---|
•OH-scavenging | 259.2 ± 4.4 a
| 411.4 ± 17.0 b
| 1.59 | Average 1.67 |
PTIO•-scavenging* | 663.9 ± 34.4 a
| 736.8 ± 29.9 b
| 1.11 |
DPPH•-scavenging | 16.0 ± 0.2 a
| 18.5 ± 0.4 b
| 1.16 |
ABTS+•-scavenging | 4.6 ± 0.2 a
| 11.4 ± 0.2 b
| 2.48 |
Cu2+-reducing | 22.4 ± 0.5 a
| 40.4 ± 1.9b
| 1.80 |
FRAP | 33.7 ± 1.0 a
| 62.8 ± 1.0 b
| 1.86 |
- The IC50 value was defined as the final concentration of 50% radical inhibition (relative reducing power). It was calculated by linear regression analysis, and expressed as the mean ± SD (n = 3). The linear regression was analyzed using Origin 6.0. Mean values with different superscripts (a or b) in the same row are significantly different (p < 0.05). *The assay was conducted at pH 7.4. The ratio value is defined as IC50 Trolox/IC50 (+) taxifolin. The dose–response curves are shown in Additional file 1: Figures S2-S7
