Oranges rich in vitamin C, P, can increase the body resistance, increase the flexibility of capillaries, lower blood cholesterol. Hyperlipidemia, hypertension, atherosclerosis are often useful to eat oranges. Oranges contain cellulose and pectin substances, can promote intestinal peristalsis, is conducive to purpura purge, remove the body of harmful substances.
Oranges are also rich in hesperidin, pomelo rutin, naringin, limonin, citric acid, malic acid. Peel contains volatile oil, there are more than 70 kinds of substances, mainly n-decanal, citral, limonene and octanol.