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. 2012 Oct 6;12:173. doi: 10.1186/1472-6882-12-173

Table 5.

The total phenolics and flavonoids content together with the antioxidant activity of fifteen medicinal plants (first group of plants)#

 
  
 DPPH scavenging activity (μM ascorbate equiv/g)1
  
 Phenolics results (GAE mg/g)3
 Flavonoids results (QE mg/g)3
S. No Name of the plants Water extracts Ethanol extracts % inhibition of Yeast oxidation of water extracts2 Water extracts Ethanol extracts Water extracts Ethanol extracts
1
 Semen coicis
 −100.1 ± 0.71
 11.00 ± 3.54
 12.37
 0.34 ± 2.32
 1.39 ± 0.65
 0.83 ± 1.96
 16.05 ± 2.93
2
 Pogostemon cablin
 103.4 ± 4.24
 26.00 ± 1.52
 12.07
 4.23 ± 0.68
 1.88 ± 0.13
 5.54 ± 0.98
 4.08 ± 0.98
3
 Pseudostellaria heterophylla
 20.9 ±12.02
 32.43 ± 4.55
 36.13
 1.74 ± 0.82
 1.58 ± 1.83
 0.59 ± 0.00
 1.94 ± 0.98
4
 Paeonia suffuticosa
 200.4 ± 0.00
 111.71 ± 0.51
 15.16
 19.96 ± 1.09
 19.74 ± 0.39
 25.85 ± 1.96
 31.40 ± 2.93
5
 Corydalis yanhusuo
 39.9 ± 0.71
 42.43 ± 5.56
 14.81
 3.51 ± 1.36
 1.28 ± 1.48
 1.57 ± 0.96
 2.11 ± 0.98
6
 Ploygala tenuifolia
 109.4 ± 2.83
 53.14 ± 2.53
 3.23
 12.01 ± 0.00
 12.15 ± 0.44
 9.3 ± 3.91
 37.55 ± 3.91
7
 Ducheshea indica
 202.4 ± 1.41
 102.07 ± 4.04
 2.34
 28.62 ± 0.68
 11.8 ± 0.44
 22.31 ± 4.89
 15.25 ± 1.96
8
 Asparagus cochinchinensis
 55.9 ± 12.02
 5.64 ± 1.01
 16.37
 2.67 ± 0.96
 0.91 ± 3.01
 1.71 ± 0.98
 1.08 ± 0.98
9
 Tussilago farfara
 198.9 ± 0.71
 113.5 ± 0.00
 20.9
 25.72 ± 2.87
 9.68 ± 0.15
 65.17 ± 0.98
 41.67 ± 0.98
10
 Aster tataricus
 119.4 ± 2.83
 49.93 ± 2.02
 0
 15.17 ± 0.27
 6.95 ± 0.00
 39.82 ± 0.98
 22.79 ± 0.98
11
 Rabdosia rubescens
 144.4 ± 2.83
 13.50 ± 4.04
 8.63
 17.47 ± 0.55
 2.41 ± 2.96
 40.66 ± 1.96
 8.35 ± 2.93
12
 Platycodon grandiflorus
 30.9 ± 3.54
 14.93 ± 4.04
 21.77
 4.58 ± 1.50
 0.79 ± 0.26
 2.93 ± 2.93
 1.52 ± 0.96
13
 Artemisia vulgaris
 181.9 ± 0.71
 98.14 ± 1.52
 5.32
 24.91 ± 0.27
 7.43 ± 1.44
 79.68 ± 1
 16.43 ± 3.91
14
 Ligustrum lucidum
 194.9 ±0.71
 107.79 ± 0
 12.02
 29.1 ± 3.28
 19 ± 0.78
 108.42 ± 1.96
 24.88 ± 0.98
15 Scutellaria barbata 188.4 ±1.41 93.5 ± 1.01 10.11 14.97 ± 2.73 9.26 ± 0.15 67.41 ± 3.91 20.62 ± 0.98

1DPPH free radical scavenging activity was measured in terms of equivalent of ascorbate (μM).

2Yeast oxidative stress was measured on the basis of survival of yeast cells (yeast growth) after treatment with H2O2.

3Total phenolics and flavonoid contents were expressed in gallic acid equivalent (GAE mg/g) and quercetin equivalent (QE mg/g) respectively.

# Plants given in this table show significant correlation between their antioxidant activities and total phenolics / flavonoids contents. These plants are a subset of plants studied in this research (Table 1).