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Table 5 DPPH scavenging activity of a methanolic extract of Gurigumu-7 and MF

From: Hepato-protective effects and chemical constituents of a bioactive fraction of the traditional compound medicine-Gurigumu-7

Substance

percentage of DPPH scavenged at different concentration

EC50 (μg/mL)

3.125 μg/mL

6.25 μg/mL

12.5 μg/mL

25 μg/mL

50 μg/mL

methanolic extract of Gurigumu-7

4.2

10.1

20.6

31.6

55.4

43.7

MF

8.0

9.4

17.9

38.8

59.3

39.8

protocatechuic acid (positive control)

30.4

44.4

58.7

72.2

81.7

7.8

  1. MF is the methanol eluted fraction from a DIAION column of Gurigumu-7 extract