Skip to main content

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.