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Table 3 50% Inhibition concentrations (IC 50 ) for radical-scavenging activity and lipid peroxidation inhibition of compounds 1–7 isolated from G. paraguayense

From: Chemical characterization and antioxidative activity of four 3-hydroxyl-3-methylglutaroyl (HMG)-substituted flavonoid glycosides from Graptopetalum paraguayense E. Walther

Compound

DPPH radical-scavenging activity(μM)

ABTS+radical-scavenging activity(μM)

Lipid peroxidation inhibition(μM)

1

7.88 ± 0.57

5.69 ± 0.31

10.76 ± 0.10

2

144.93 ± 3.56

96.81 ± 2.40

9.10 ± 0.17

3

8.40 ± 0.06

9.22 ± 0.67

46.54 ± 1.01

4

108.47 ± 6.94

152.21 ± 12.16

17.45 ± 0.18

5

11.06 ± 0.34

14.50 ± 1.24

1.67 ± 0.01

6

351.89 ± 17.53

277.44 ± 10.01

330.64 ± 12.63

7

19.18 ± 0.91

15.28 ± 0.06

2.96 ± 0.06

Quercetin

0.475 ± 0.00

0.35 ± 0.01

0.07 ± 0.00

  1. Values are given as mean ± S.D. (n = 3).