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Table 1 Total phenolic contents and EC50 values (ABTS free radical scavenging assay) of their derived fractions of the methanolic extract of E. annuus leaf

From: Neuroprotective and anti-oxidant effects of caffeic acid isolated from Erigeron annuus leaf

Solvent fractions EC50 (μg/ml) Total phenolics (mg of GAE/g)
Chloroform 528.81 107.34 ± 1.87*
Butanol 250.00 396.49 ± 2.18
Water 304.76 241.87 ± 4.06**
Vitamin C 47.97 -
  1. EC50: 50% effective concentration.
  2. Results are presented as mean ± SD of three independent experiments; the letters (a-d) indicate statistically significant differences (*P = 0.025, ** P = 0.047).