Table 2.
EC50 values of ethanolic and hot water extracts from cap and stipe of Coprinus comatus in antioxidant properties.
| Extract | Antioxidant attribute | EC50 a (mg/mL) | |
|---|---|---|---|
| Cap | Stipe | ||
| Ethanolic | Antioxidant activity Reducing power Scavenging ability on DPPH radicals Scavenging ability on OH radicals Scavenging ability on superoxide radicals |
1.56 ± 0.24 b 1.67 ± 0.13 0.86 ± 0.06 3.23 ± 0.28 25.3 ± 0.21 |
0.62 ± 0.42 1.93 ± 0.23 7.86 ± 0.16 3.35 ± 0.17 20.7 ± 0.38 |
| Hot water | Antioxidant activity Reducing power Scavenging ability on DPPH radicals Scavenging ability on OH radicals Scavenging ability on superoxide radicals |
0.81 ± 0.03 0.95 ± 0.05 2.09 ± 0.26 8.66 ± 0.35 -- c |
5.08 ± 0.17 14.8 ± 0.22 8.98 ± 0.19 16.9 ± 0.41 -- |
a EC50 value: The effective concentration at which the antioxidant activity was 50%; the absorbance was 0.5 for reducing power; DPPH radicals, hydroxyl radicals or superoxide radicals was scavenged by 50%, respectively. EC50 value was obtained by interpolation from linear regression analysis. b Each value is expressed as mean ± S.D. (n = 3). c No effect.