Table 1.
| Dietary source | Portion size | mg/portion |
|---|---|---|
| Beer | 12 oz | 8.25 mg |
| Red wine | 4 oz | 1.70 mg |
| Raisins | 100 gm | 8.25 mg |
| Green beans | 250 gm | 6.10 mg |
| High-bran cereal | 100 gm | 10.17 mg |
| Whole grain bread | 200 gm | 4.50 mg |
| Mineral water | 0.5 L | 0–40 mg depending on brand |
| Brown rice with husks | 100 gm | 2.07 mg |