Skip to main content
Botanical Studies

Table 2 The effect of season on the antioxidant activities of the ethanol extracts of Hygrophila pogonocalyx Hayata

From: Chemical and pharmacological investigation of micropropagated Hygrophila pogonocalyx produced from leaf explants

 

Ferrous ion chelating activity (%)

DPPH radical scavenging activity

Total phenol

 

μmol EDTA/g DW*

AEAC**

mg GA/100 g DW#

March

8.3 ± 0.0 c, ##

2914.0 ± 25.0 bc

117.5 ± 0.0 c

April

7.4 ± 0.0 c

2495.5 ± 7.8 d

91.6 ± 0.0 f

May

57.0 ± 13.3 a

2727.4 ± 9.2 cd

98.6 ± 0.0 e

June

17.5 ± 1.2 b

3175.4 ± 17.8 a

127.1 ± 0.0 a

September

4.1 ± 0.2 c

2979.6 ± 356.8 ab

122.3 ± 0.0 b

October

4.4 ± 0.1 c

2542.2 ± 43.3 d

92.3 ± 0.0 f

November

3.3 ± 0.2 c

2619.8 ± 24.4 d

106.0 ± 0.0 d

December

2.8 ± 0.1 c

2896.9 ± 36.6 bc

118.8 ± 0.1 bc

  1. *: μmol EDTA/g DW: micromole EDTA equivalents per gram of plant dry weight.
  2. **: Ascorbic acid equivalent antioxidant activity: milligram of ascorbic acid equivalents per 100 g of plant dry weight (mg AA/100 g DW).
  3. #: mg GA/100 g DW: milligrams of gallic acid equivalents per 100 g of plant dry weight.
  4. ##: In a single column, means with the same letter are not significantly different according to Duncan’s multiple range tests at the 0.05 level.
Back to article page