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Table 1 ABTS free Radical scavenging assay of plant extracts using ascorbic acid as standard

From: Phenolic contents, antioxidant and anticholinesterase potentials of crude extract, subsequent fractions and crude saponins from Polygonum hydropiper L

Samples

Concentrations (μg/ml)

Percent inhibition (mean ± SEM)

IC50(μg/ml)

Ph.Cr

1000

88.58 ± 1.12

< 0.01

500

87.65 ± 1.34

250

84.31 ± 2.15

125

77.56 ± 1.73*

 

1000

88.44 ± 0.58

500

87.90 ± 0.96

Ph.Hex

250

86.28 ± 2.19

< 0.01

125

81.77 ± 1.24

1000

89.76 ± 0.71

500

87.65 ± 1.32

Ph.Chf

250

84.23 ± 1.83

< 0.01

125

79.10 ± 0.90*

1000

90.56 ± 1.06

500

87.42 ± 0.43

Ph.EtAc

250

86.42 ± 0.46

< 0.01

125

80.90 ± 1.55

1000

91.03 ± 0.35

500

90.08 ± 0.47

Ph.Bt

250

87.91 ± 0.88

< 0.01

125

83.80 ± 1.50

1000

90.56 ± 1.06

500

90.08 ± 0.47

Ph.Aq

250

87.91 ± 0.88

< 0.01

125

83.80 ± 1.50

1000

90.84 ± 0.30

500

88.72 ± 1.01

Ph.Sp

250

87.94 ± 1.13

< 0.01

125

79.80 ± 0.90*

1000

87.90 ± 0.96

500

83.08 ± 0.47

Ascorbic acid

250

79.85 ± 2.24

< 0.1

125

77.40 ± 0.20

  1. Values significantly different as compare to positive control, *P < 0.05.
  2. Values expressed as Percent inhibition (Mean ± SEM of n = 3) and IC50.