Table 4. Content of nitrites and nitrates in natural foods.
| Foods | Nitrite (mg/kg) | Nitrate (mg/kg) |
|---|---|---|
| Vegetables | 0.17–5.4 | 436–1,980 |
| Cabbage | 0.17–11.7 | 82.2–480 |
| Carrot | 4.3–12.6 | 2,422.4–2,610 |
| Celery | 61.7 | 1,754.90 |
| Chicory | 0.18–9.03 | 32–877 |
| Cucumber | 2.3–7.2 | 347–1,100 |
| Egg plant | 2.1–4.5 | 35.7–650 |
| Garlic | 1.1 | 382 |
| Green onion | 0.28–16 | 962–1,725 |
| Lettuce | 1.9–4.9 | 36–609 |
| Onion | 3.6–138.4 | 1,710–2,336.4 |
| Parsley | 0.5–5.6 | 54–376 |
| Potato | 15.7 | 357.7 |
| Pumpkin | 3.9 | 71.3 |
| Sweet potato | 0.82–5.5 | 6.4–175 |
| Tomato | 0.17–5.4 | 436–1,980 |
| Fruits | ||
| Apple | 5.1 | 103 |
| Banana | 52 | 444 |
| Cherries | 4.2 | 212 |
| Grapes | 7.1 | 160 |
| Kiwi | 5.5 | 96.5 |
| Melon | 4.2–7.65 | 33.64–223 |
| Orange | 4.5 | 132 |
| Pears | 4.3 | 173 |
| Tangerine | 5.3 | 326 |
| Watermelon | 4.8–5.5 | 26.61–110 |