Research on 25 different types of microgreens found that they contained 4 to 40 times more nutrients per weight than their mature counterparts (Xiao et al. 2012). This means that their nutrient content is highly concentrated. Microgreens are a rich source of phytonutrients and antioxidants, such as sulforaphane; vitamins such as Vitamin C, A, K and E; and minerals including potassium, zinc, iron, calcium, magnesium and copper. Microgreens are a functional food, meaning they provide key nutrients in a practical way.