Citrus is native to China. Lu Chunqiu said: "The beauty of fruit is the orange of Jiangpu and the grapefruit of Yunmeng". This shows that citrus cultivation in China was quite developed at that time. Nowadays, the cultivation of citrus is not only extensive, but also has increased to more than 40 varieties, and many excellent varieties have attracted people's attention. The oranges in Huangyan tangerine in Zhejiang and Nantang tangerine in Jiangxi are better. Among oranges, Guangdong's burnt orange and goose egg orange are better. Guangdong Xinhui orange and Chaozhou sweet orange are the most popular sweet oranges. Grapefruit is famous for Shatian pomelo.
Citrus can be eaten fresh or processed into canned food, fruit juice, jam and fruit wine. For perennial consumption. Processing oranges into orange cakes is sweet and delicious, and is regarded as the best in food.
Orange peel is one of the raw materials for extracting spices, and it can also be used to make candied fruit and extract aromatic oil and pectin. Aromatic oil can be used to make cakes, sweets and drinks. Pectin can be made into glossy transparent jelly, soft candy and jam. Even when cooking, orange peel can come in handy. When stewing beef and mutton, put a little orange peel to make the meat taste more delicious; When steaming steamed bread, adding some orange peel silk can add a flavor to steamed bread. Soaking orange peel in water and adding proper amount of sugar instead of tea can not only regulate qi and reduce swelling, but also promote fluid production and moisten throat.
Citrus is delicious and nutritious. The edible part of 100g has protein content of 9 times, calcium content of 5 times, phosphorus content of 2.5 times, carotene content of 5.5 times, vitamin B 1 content of 8 times, vitamin B2 content of 3 times, nicotinic acid content of 1.5 times and vitamin C content of 65433 times. Vitamins and organic acids in citrus can effectively regulate physiological functions such as human metabolism. Eating citrus regularly is more beneficial to the elderly and cardiovascular patients.
The flesh, skin, core, collaterals and leaves of citrus are all famous Chinese herbal medicines. Traditional Chinese medicine believes that orange peel has the function of moistening lung and regulating qi, and has certain curative effect on qi stagnation of chest diaphragm and chest arthralgia.
Orange peel, also known as dried tangerine peel. Warm in nature, pungent and bitter in taste, entering the lungs and spleen. Pharmacological studies have proved that the content of carotene and vitamin C in orange peel is more than that in pulp. In addition, there are thiamine, riboflavin and volatile oil. It can stimulate digestive tract, increase gastrointestinal peristalsis, promote the secretion of gastric juice, and has the functions of invigorating stomach and expelling wind. In addition, it can improve the function of respiratory mucosa, increase coronary blood flow, diminish inflammation and inhibit bacteria.
Orange collaterals contain vitamin P, and Chinese medicine believes that orange collaterals have the function of resolving phlegm and dredging menstruation. Suitable for chest and rib pain caused by hypertension and cough. Combined with Rhizoma Cyperi, it can also treat pleurisy.
Orange seed can be used as medicine to treat hernia pain, testicular swelling and pain, bladder pain and so on. Orange root and orange leaf are used as medicine, each of which has the functions of soothing liver and moistening lung, harmonizing stomach and strengthening spleen and regulating qi.