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Table 3 IC50 of free radical scavenging activity of standards and different extracts of C. angustifolia

From: Pharmacologically active flavonoids from the anticancer, antioxidant and antimicrobial extracts of Cassia angustifolia Vahl

Test material DPPH radical IC50 in μg/mL
Plant extracts Methanol 2.49 ± 0.01*
Ethanol 2.41 ± 0.02*
Acetone 3.06 ± 0.04**
Ethyl acetate 2.74 ± 0.02*
Aqueous 3.03 ± 0.04**
Standards Gallic acid 2.52 ± 0.02
Ascorbic acid 2.54 ± 0.00
  1. Each value represents the mean ± standard deviation of three replicates (n = 3)
  2. (*), and (**), significant at level P ≤ 0.01 and 0.001, respectively
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