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Table 1 IC 50 (μg/mL) of different compounds separated from Eichhornia crassipes against DPPH and ABTS radical, and its relative percentage to Ascorbic acid as natural antioxidant

From: Cytotoxic and antioxidant properties of active principals isolated from water hyacinth against four cancer cells lines

Materials DPPH method ABTS method Relative percentage to Vit. C
Crude extract 74.8 ± 4.5f 50.8 ± 2.4g 23.64
Compound A 99.2 ± 5.8a 77.0 ± 3.2c 15.6
Compound B 97.1 ± 3.9b 78.5 ± 2.4a 15.29
Compound C 97.4 ± 2.7b 77.6 ± 1.3b 15.47
Compound D 92.4 ± 6.5e 73.2 ± 4.2e 16.39
Compound E 95.4 ± 3.1d 75.8 ± 2.6d 15.84
Compound F 97.2 ± 4.6b 77.9 ± 1.9ab 15.40
Compound G 97.2 ± 1.6b 75.8 ± 1.6d 15.84
Compound H 96.5 ± 2.7c 69.8 ± 3.0f 17.20
Compound I 97.0 ± 5.4b 76.8 ± 3.1c 15.62
*BHT 8.7 ± 0.5i 5 ± 0.02j  
*BHA 11.5 ± 0.95h 9.4 ± 0.55i  
*Ascorbic acid 18.6 ± 1.0 g 12.0 ± 0.60h  
LSD 0.01 0.387 0.569  
  1. *Standard antioxidants.
  2. Each value is represented as mean of triple treatments, means within each row with different letters differ significantly at P < 0.01 according to Duncan’s multiple range test.