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Table 2 Percent of DPPH free radical scavenging activity and antioxidant strength of A-(2-mercaptopropionyl) glycine (MPG), vitamin C (Vit- C), grape seed proanthocyanidin (GP), B. monnieri n-butanolic fraction (BM-ButFr) or standard butylated hydroxytoluene (BHT) against their respective concentrations

From: Synthetic and natural antioxidants attenuate cisplatin-induced vomiting

Concentration (μg/mL) Percent inhibition (%)
BHT MPG Vit-C GP BM-ButFr
1 15.0 ± 0.7 20.0 ± 2.1 14.6 ± 1.5 36.4 ± 0.8 24.5 ± 0.7
10 24.4 ± 4.2 20.8 ± 1.8 15.7 ± 0.6 71.6 ± 0.7 20.9 ± 0.8
30 22.1 ± 1.4 19.4 ± 1.2 17.3 ± 1.5 82.6 ± 1.2 32.2 ± 2.4
50 22.8 ± 0.5 24.4 ± 1.0 21.2 ± 2.4 92.4 ± 0.1 46.5 ± 2.9
100 58.6 ± 3.8 94.0 ± 0.01 92.7 ± 0.7 92.4 ± 0.2 90.9 ± 0.5
200 89.7 ± 2.4 96.2 ± 0.2 96.0 ± 0.3 91.6 ± 0.3 90.7 ± 0.3
500 93.8 ± 0.1 96.0 ± 0.7 96.7 ± 0.2 89.6 ± 0.2 89.9 ± 0.4
Antioxidant strength
 EC50 (μg/mL) 98.17 ± 3.842 67.66 ± 3.095 69.42 ± 3.027 6.498 ± 0.630 55.61 ± 1.137
 Antiradical power 0.0102 ± 0.0004 0.0148 ± 0.0007 0.0143 ± 0.0005 0.1567 ± 0.0145 0.0159 ± 0.0010
 Stoichiometry 196.3 ± 7.685 135.3 ± 6.191 138.8 ± 6.053 13.00 ± 1.261 111.2 ± 2.274
  1. Values are expressed as mean ± S.E.M from three separate experiments