Table 2.
Antioxidant activity of rice bran protein hydrolysates with various independent factors.
| Factors | Antioxidant activities | ||||
|---|---|---|---|---|---|
| Ratio of Fl:Al (%) | Hydolysis time (min) | IC50 of DPPH (mg/mL) | IC50 of ABTS (mg/mL) | FRAP (mmol FeSO4/100 g) | H2O2 (mM Trolox/g) |
| 0:100.0 | 60 | 8.03 ± 0.56 | 1.10 ± 0.02 | 715.98 ± 19.67 | 262.11 ± 9.53 |
| 7.5:92.5 | 60 | 5.13 ± 0.34 | 1.04 ± 0.02 | 817.74 ± 49.43 | 258.42 ± 6.60 |
| 15.0:85.0 | 60 | 6.42 ± 0.55 | 1.06 ± 0.03 | 712.53 ± 18.92 | 241.27 ± 4.14 |
| 0:100.0 | 300 | 9.90 ± 0.39 | 1.03 ± 0.02 | 531.07 ± 15.28 | 192.87 ± 3.71 |
| 7.5:92.5 | 300 | 8.91 ± 0.75 | 1.05 ± 0.04 | 652.18 ± 13.11 | 240.60 ± 3.33 |
| 15.0:85.0 | 300 | 9.86 ± 0.51 | 0.99 ± 0.01 | 551.15 ± 19.86 | 220.10 ± 2.65 |
| 0:100.0 | 540 | 7.96 ± 0.14 | 1.15 ± 0.03 | 532.54 ± 8.62 | 222.12 ± 4.82 |
| 7.5:92.5 | 540 | 9.18 ± 0.52 | 1.20 ± 0.02 | 562.55 ± 20.52 | 205.98 ± 3.71 |
| 15.0:85.0 | 540 | 7.95 ± 0.36 | 1.13 ± 0.01 | 554.61 ± 33.31 | 220.10 ± 8.80 |
| 7.5:92.5 | 300 | 8.28 ± 0.24 | 0.97 ± 0.02 | 616.83 ± 30.54 | 211.36 ± 3.71 |
| 7.5:92.5 | 300 | 9.58 ± 0.44 | 1.01 ± 0.01 | 575.73 ± 20.03 | 197.24 ± 9.61 |
| 7.5:92.5 | 300 | 9.90 ± 0.09 | 1.07 ± 0.01 | 608.78 ± 10.48 | 206.32 ± 8.80 |
| 7.5:92.5 | 300 | 9.85 ± 0.38 | 1.03 ± 0.02 | 589.43 ± 11.34 | 202.96 ± 4.06 |
Note: All values are Mean ± SD of three individual determinations.