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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).