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Table 4 Influence of C-3 + EGb and isorhamnetin + caffeic acid on CAT, POD, SOD and GSH enzyme activities

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

CAT activity U/mg prot

POD activity U/mg prot

SOD activity U/mg prot

GSH activity U/mg prot

O

E

γ

O

E

γ

O

E

γ

O

E

γ

C-3 + EGb

5:1

10.578 ± 0.067

10.613 ± 0.085

0.997

84.837 ± 1.901

83.467 ± 0.900

1.016

90.775 ± 1.038

88.600 ± 1.257

1.025

114.376 ± 1.697

113.692 ± 1.529

1.006

3:1

10.465 ± 0.058*

10.936 ± 0.073

0.957

80.115 ± 0.847

79.996 ± 0.755

1.001

98.150 ± 0.051

85.525 ± 1.551

1.148

110.222 ± 1.880

109.027 ± 1.956

1.011

1:1

13.175 ± 0.071*

11.908 ± 0.066

1.106

78.015 ± 0.798

69.581 ± 0.724

1.121

105.125 ± 0.073*

76.325 ± 1.356

1.377

102.312 ± 1.587

95.031 ± 1.365

1.077

1:3

12.883 ± 0.120

12.880 ± 0.090

1.000

59.346 ± 0.736

59.166 ± 0.686

1.003

66.500 ± 1.112

67.125 ± 1.193

0.991

82.964 ± 1.373

81.036 ± 1.703

1.024

1:5

13.315 ± 0.083

13.204 ± 0.068

1.008

57.514 ± 0.681

55.695 ± 0.949

1.033

67.800 ± 0.178

64.050 ± 1.138

1.058

78.2775 ± 1.541

76.371 ± 1.143

1.025

Isorhamneti + Caffeic acid

5:1

9.297 ± 0.054

8.878 ± 0.079

1.047

77.455 ± 0.618

72.404 ± 0.610

1.070

107.130 ± 1.690

109.134 ± 1.772

0.982

102.798 ± 1.105

99.666 ± 0.776

1.032

3:1

8.445 ± 0.078

8.520 ± 0.069

0.991

85.398 ± 0.759

83.218 ± 0.675

1.026

107.418 ± 1.438

103.410 ± 1.858

1.039

96.300 ± 1.230

95.760 ± 0.549

1.006

1:1

10.699 ± 0.101*

7.445 ± 0.066

1.437

119.896 ± 0.538

115.659 ± 0.871

1.037

125.970 ± 1.681*

86.244 ± 1.112

1.461

82.170 ± 0.776

84.078 ± 1.074

0.977

1:3

6.729 ± 0.067

6.371 ± 0.082

1.056

164.424 ± 0.620

148.100 ± 0.670

1.110

71.928 ± 1.925

69.078 ± 1.368

1.041

74.412 ± 0.680

72.396 ± 1.187

1.028

1:5

6.729 ± 0.064

6.013 ± 0.063

1.119

160.563 ± 0.386

158.913 ± 0.322

1.010

62.376 ± 1.673

63.360 ± 1.453

0.985

69.966 ± 0.845

68.490 ± 1.192

1.021

  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