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.