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Table 1 Synergistic effects of C-3 + catechin, C-3 + quercetin, C-3 + kaempferide and C-3 + isorhamnetin on MTS antioxidant activity

From: Synergistic effects and related bioactive mechanism of Potentilla fruticosa L. leaves combined with Ginkgo biloba extracts studied with microbial test system (MTS)

Combinations Ratios Test on growth inhibition
O E γ
C-3 + Catechin 5:1 0.746 ± 0.019 0.783 ± 0.008 0.954
3:1 1.043 ± 0.010 0.954 ± 0.009 1.094
1:1 1.701 ± 0.015* 1.467 ± 0.019 1.159
1:3 2.118 ± 0.013 1.981 ± 0.012 1.069
1:5 2.131 ± 0.016 2.152 ± 0.013 0.990
C-3 + Quercetin 5:1 1.320 ± 0.017 1.367 ± 0.017 0.966
3:1 1.459 ± 0.083 1.323 ± 0.013 1.102
1:1 1.321 ± 0.010 1.127 ± 0.013 1.172
1:3 0.942 ± 0.012* 0.931 ± 0.017 1.012
1:5 0.854 ± 0.017 0.865 ± 0.010 0.987
C-3 + Kaempferide 5:1 1.350 ± 0.006* 1.367 ± 0.008 0.987
3:1 1.379 ± 0.087 1.375 ± 0.055 1.003
1:1 1.030 ± 0.018 1.048 ± 0.020 0.983
1:3 0.716 ± 0.013 0.721 ± 0.015 0.994
1:5 0.608 ± 0.013 0.612 ± 0.013 0.995
C-3 + Isorhamnetin 5:1 2.134 ± 0.018* 1.367 ± 0.009 1.561
3:1 1.704 ± 0.020* 1.242 ± 0.021 1.372
1:1 2.093 ± 0.017* 1.290 ± 0.012 1.622
1:3 1.693 ± 0.015* 1.338 ± 0.014 1.265
1:5 1.528 ± 0.013* 1.354 ± 0.016 1.128
  1. Values are the mean of three replicates ± SD (n = 3)
  2. The asterisk indicates a significant difference between observed value and expected value (p < 0.05). O, observed value; E, expected value; γ, interaction index