Extraction condition | Radical scavenging activity (IC50, μg/mL) | Content (μg/mg) | ||||
---|---|---|---|---|---|---|
EtOH (%) | Temperature (°C) | Time (h) | DPPH | ABTS | Polyphenol | Flavonoid |
0 | 20 | 6 | 50.11±13.41 | 15.38±0.62a | 152.98±3.20g | 6.78±0.70g |
20 | 20 | 6 | 41.38±13.41ab | 12.95±0.18b | 195.89±2.38f | 7.83±0.28g |
50 | 20 | 6 | 26.85±1.64bc | 10.87±0.06c | 231.31±2.75bc | 10.30±0.59f |
70 | 20 | 6 | 22.51±0.66bc | 12.02±0.25b | 221.51±4.99cd | 17.10±0.56e |
70 | 60 | 6 | 15.16±0.94cd | 7.85±0.21e | 212.60±1.71de | 31.33±0.57d |
70 | 80 | 6 | 9.54±0.66cd | 6.69±0.34f | 241.15±7.93ab | 37.45±0.94b |
70 | 80 | 3 | 12.26±0.69cd | 9.96±0.14cd | 203.43±3.41ef | 33.47±0.44c |
70 | 80 | 12 | 13.92±1.26cd | 7.36±0.71ef | 243.65±1.96a | 41.44±0.88a |
70 | 80 | 24 | 15.23±2.50cd | 10.76±0.22c | 230.83±1.67bc | 38.82±0.40b |
70 | 80 | 48 | 16.96±7.76cd | 9.12±0.05d | 222.12±1.59cd | 38.25±0.47b |
Gallic acid (positive control) | 2.51±0.51d | 1.65±0.16g | NA | NA |