Table 1. Effects of UVB irradiation on the EC50 values of ethanolic and hot water extracts of samples fermented by Cordyceps militaris and grain substrates.
| Extract | EC50/(mg extract per mL) | ||||||
|---|---|---|---|---|---|---|---|
| B | BM | B-U | CBD-U | CBF-U | CBN-U | ||
| Ethanolic | Reducing power | (16.0±0.9)b | (1.94±0.03)c | (24.0±0.9)a | (0.85±0.01)d | (0.96±0.01)d | (0.99±0.02)d |
| Scavenging ability | (1.65±0.06)b | (1.94±0.01)a | (1.58±0.02)b | (1.38±0.04)c | (0.95±0.01)e | (1.28±0.05)d | |
| Chelating ability | (8.2±0.1)a | (6.9±0.4)b | (8.7±0.4)a | (5.4±0.2)c | (3.7±0.1)d | (6.8±0.4)b | |
| Hot water | Reducing power | (21.0±0.7)b | (20.8±0.8)b | (26.5±2.8)a | (10.6±0.5)d | (12.6±0.1)d | (17.4±0.5)c |
| Scavenging ability | (14.0±0.7)b | (20.8±0.4)b | (35.4±2.2)a | (7.5±0.4)e | (8.4±0.1)d | (9.7±0.7)d | |
| Chelating ability | (0.69±0.01)b | (0.68±0.01)b | (0.87±0.01)a | (0.58±0.02)d | (0.65±0.01)c | (0.68±0.02)b | |
| ER | ERM | ER-U | CERD-U | CERF-U | CERN-U | ||
| Ethanolic | Reducing power | (28.5±0.3)b | (14.73±0.71)c | (31.11±0.62)a | (1.3±0.2)d | (1.6±0.9)d | (1.4±0.3)d |
| Scavenging ability | (2.72±0.06)d | (2.92±0.04)b | (3.16±0.02)a | (2.84±0.06)bc | (2.79±0.02)cd | (2.79±0.07)cd | |
| Chelating ability | (23.9±0.6)b | (15.1±0.5)c | (26.0±0.4)a | (10.9±0.8)d | (7.8±0.4)e | (7.6±0.1)e | |
| Hot water | Reducing power | (36.1±1.3)b | (26.5±0.5)c | (46.8±1.1)a | (25.0±0.6)d | (22.9±0.2)e | (26.2±0.2)cd |
| Scavenging ability | (26.8±0.7)b | (17.78±0.04)c | (43.7±0.6)a | (12.2±0.7)f | (15.3±0.2)e | (16.2±0.1)d | |
| Chelating ability | (12.2±0.6)a | (8.3±0.7)b | (8.0±0.2)bc | (7.6±0.1)c | (6.37±0.03)d | (6.8±0.2)d | |
B=buckwheat, BM=buckwheat mycelia, B-U=UVB irradiated buckwheat, CBD-U=fermented then dried and UVB irradiated buckwheat, CBF-U=fermented and UVB irradiated buckwheat, CBN-U=fermented unirradiated buckwheat, ER=embryo rice, ERM=embryo rice mycelia, ER-U=UVB irradiated embryo rice, CERD-U=fermented then dried and UVB irradiated embryo rice, CERF-U=fermented and UVB irradiated embryo rice, CERN-U=fermented embryo rice without UVB irradiation. EC50 values were obtained by interpolation from linear regression analysis A750 nm=0.5 in reducing power assay, 1,1-diphenyl-2-picrylhydrazyl radicals were scavenged by 50% and ferrous ions were chelated by 50%. Each value is expressed as the mean±standard error (N=3). Mean values with different superscript letters within a row differ significantly (p<0.05)