Orange – is a fruit that belongs to the subfamily of citruses. This fruit is very low in sodium, fat and a great source of vitamin C. Oranges are full of vitamins B1, B2, E, PP, carotene, 8.6% sugars, citric and apple acid, thiamine, riboflavin, pectin, volatile, good salts and especially potassium. Its encouraged to eat oranges with the peel, which is richer than flesh in active substances such as vitamin P and pectin. Zest, the very top layer of the orange, should be cleared. It contains irritating volatile substances. Oranges are a great diet product, and enhance healing. This fruit quenches thirst, stimulates appetite and improves digestion. Medium orange contains about 62 calories, and a glass of fresh juice about 110 calories.