Table 1.
DPPH radical scavenging activity, superoxide radical scavenging activity, ORAC (oxygen radical absorbance capacity) of extracts from chlorella
Extraction conditions | DPPH radical scavenging activity (5 mg/mL, %) | Superoxide radical scavenging activity (5 mg/mL, %) | ORAC (Trolox μM/g FW) |
Hot water extraction | 11.47±0.641)e1) | 28.46±3.37d | 62.39±7.15c |
50% ethanol extraction | 29.19±0.37b | 48.91±0.84b | 150.44±4.45a |
Pressurized extraction | 14.58±0.95d | 32.96±4.84c | 120.43±11.64b |
Enzyme extraction | 17.39±0.30c | 35.86±4.14c | 134.04±11.57b |
Positive control3) | 95.75±0.51a | 94.58±2.56a | - |
The values are mean SD of three experimental data.
Mean±SD (n=3) within each column (a-e) followed by the same letter are not significantly different (p<0.05).
Positive control : ascorbic acid (DPPH radical scavenging activity) and catechin (superoxide radical scavenging activity) solution were measured at 1 mg/mL, respectively.