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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).
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Chinese Medicine

ISSN: 1749-8546

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