This sprouting mix has high levels of sulforaphane, a cellular detoxifier that may prevent cancer and rejuvenate the immune system. Arugula – very high in protein, vitamin B6, amino acids, iron and calcium. Broccoli – rich in vitamins K, C, B6, and E, folate, dietary fiber, phosphorus, potassium and magnesium. Mustard – a powerhouse of protein and a great source of vitamins A, B6, and C, calcium, iron, magnesium, phosphorus, potassium and amino acids. Radish – great protein source and very good source of vitamins A, B6, C, calcium, iron, magnesium, phosphorus, potassium and zinc.