Oranges are alias oranges. Oranges are fruits of rutaceae plants, and China is also one of the main birthplaces of citrus reticulata. The ancient people in China ate oranges and cultivated wild citrus reticulata artificially, which has a long history.

There are several varieties of orange, and its fruit skin is thick, consisting of juice bubbles and seeds. Oranges are tropical crops, mainly planted in southern China. Oranges are not only colorful, but also sweet and sour, which is a common delicacy. Oranges are rich in vitamin C, which is of great benefit to human body. In Chinese medicine, oranges are considered to get angry easily, so you can't eat more.

Oranges originated in China, and thousands of years of cultivation history can't tell the specific location. Oranges spread all over Eurasia by Arabs, and are still called "China apples" in Holland and Germany. China is one of the important origins of orange fruit, which is rich in citrus resources and has a variety of excellent varieties, and has a cultivation history of more than 4,000 years. According to textual research, it was not until A.D. 147 1 year that oranges, tangerines, oranges and other citrus fruit trees were introduced into Portugal from China and into the United States in A.D. 1665.

nutritive value

1. Oranges are rich in vitamin C and citric acid, the former has the function of beautifying, while the latter has the function of eliminating fatigue;

2. The thin inner skin of orange contains dietary fiber and pectin, which can promote laxation and lower cholesterol;

3. Hesperidin can strengthen the toughness of capillaries, lower blood pressure and dilate the coronary artery of the heart, so oranges are food to prevent coronary heart disease and arteriosclerosis;

4. Studies have confirmed that in fresh citrus juice, there is a substance "Nomilin" with strong anticancer activity, which can decompose carcinogenic chemicals, inhibit and block the growth of cancer cells, increase the activity of detoxification enzymes in human body by times, prevent carcinogens from damaging the nucleus and protect the integrity of genes;

5. The flesh, skin, collaterals, cores and leaves of oranges are all medicines. Orange peel, also known as dried tangerine peel, is one of the important drugs. "Compendium of Materia Medica" says that dried tangerine peel is "the same tonic is the tonic; Diarrhea with laxatives; The same liter of medicine will rise; The same medicine will drop.