Maize contains 60 to 68% starch and 7 to 15% protein. Opaque seeded types are more nutrition’s and contains a high percentage of essential amino acids. The embryo which forms about 12% of the whole grain is the source of protein, fats and sugars. Yellow maize is the richest sources of vitamin-a. Maize has more riboflavin than wheat or rice and is rich in phosphorous and potash.