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Table 1 The IC50 values of (+) taxifolin and trolox in various assays (μM)

From: The mechanism of (+) taxifolin’s protective antioxidant effect for •OH-treated bone marrow-derived mesenchymal stem cells

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
  1. 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