Tomatoes are rich in calcium, potassium and phosphorus.
Potassium content of tomatoes is very high. They are rich in beta carotene which is very useful for the eyes. They are also good source of vitamin C. Redness of the tomatoes is due to a pigment lycopene and the phytochemicals carotenoids. Lycopene is an antioxidant that has ability to fight cancer. During the ripening stage the chlorophyll of the green tomatoes is converted to limonene and thus the tomatoes are turned red.