Table 1.

Classification of different vegetables and fruits according to their nitrate content. Adapted from Moreno et al., 2015 [14].

Classification of Vegetables and Fruits According to Their NO3− Content (mg/kg Wet Weight)
Very low (<200 mg/kg)	Low (200–500 mg/kg)	Medium (500–1000 mg/kg)	High (1000–2500 mg/kg)	Very high (>2500 mg/kg)
Garlic Artichoke Onion Melon Pear Potato Tomato	Chikory Broccoli Cauliflower Carrot Cucumber	Turnip Cabbage	Escarole Leek Parsley Celery-root	Beetroot Spinach Lettuce Radish Celery Chard