Table 3.
Effect of rice bran extracts on the induction of quinone reductase activity in Hepa1c1c7 cell lines
| Treatment | Dose (per mL) | % cell viability | Specific activity | Induction fold |
|---|---|---|---|---|
| 0.4% dimethylsulfoxide | - | 100.0 ± 0.0 | 861 ± 69 | 1.00 ± 0.00 |
| β-naphthoflavone | 0.1 μg | 109.4 ± 3.2 | 3,326 ± 80 | 3.88 ± 0.26 |
| Purple rice bran | ||||
| Dichloromethane | 50 μg | 115.4 ± 3.8 | 1,082 ± 48 | 1.26 ± 0.06 |
| 100 μg | 115.1 ± 3.6 | 1,189 ± 153 | 1.38 ± 0.07 | |
| 200 μg | 104.8 ± 0.9 | 1,525 ± 214 | 1.77 ± 0.11 | |
| Methanol | 50 μg | 100.2 ± 1.7 | 1,033 ± 53 | 1.20 ± 0.04 |
| 100 μg | 114.2 ± 1.9 | 1,084 ± 10 | 1.26 ± 0.09 | |
| 200 μg | 115.0 ± 4.2 | 1,351 ± 35 | 1.58 ± 0.14 | |
| White rice bran | ||||
| Dichloromethane | 50 μg | 115.4 ± 3.8 | 1,131 ± 82 | 1.31 ± 0.05 |
| 100 μg | 114.6 ± 2.5 | 1,310 ± 129 | 1.52 ± 0.03 | |
| 200 μg | 105.0 ± 1.6 | 1,627 ± 166 | 1.89 ± 0.07 | |
| Methanol | 50 μg | 101.2 ± 0.9 | 1,148 ± 100 | 1.33 ± 0.03 |
| 100 μg | 114.5 ± 4.9 | 1,175 ± 69 | 1.37 ± 0.04 | |
| 200 μg | 114.0 ± 5.5 | 1,368 ± 80 | 1.59 ± 0.12 | |
Values are presented as mean ± SD.