Table 4.
Mean metal concentrations in spinach and turnips (mg kg−1) reported in literature.
| Water and trace elements | Reference
|
||
|---|---|---|---|
| Italian Food Composition database (BDA, 2008) | Food Composition and Nutrition Tables (Souci et al., 2008) | USDA National Nutrient Database for Standard Reference (USDA, 2011) | |
| Spinach | |||
| Water | 90.1 g | 91.2 g | 91.4 g |
| Cu | 1.6 mg kg−1 | 0.9 mg kg−1 | 1.3 mg kg−1 |
| Fe | 29.000 mg kg−1 | 34.000 mg kg−1 | 27.000 mg kg−1 |
| Mn | / | 5.99 mg kg−1 | 8.97 mg kg−1 |
| Zn | 14.3 mg kg−1 | 6.7 mg kg−1 | 5.3 mg kg−1 |
| Turnip | |||
| Water | 93.3 g | 89.9 g | 91.87 g |
| Cu | / | 0.56 mg kg−1 | 0.85 mg kg−1 |
| Fe | 6 mg kg−1 | 3.83 mg kg−1 | 3 mg kg−1 |
| Mn | / | 0.68 mg kg−1 | 1.34 mg kg−1 |
| Zn | 0.80 mg kg−1 | 2.30 mg kg−1 | 2.7 mg kg−1 |