Introduction of raw materials
Oranges are ripe fruits of many kinds of oranges, such as Fuju or Zhuju, which belong to Rutaceae. Oranges, together with oranges, are often called citrus, which is one of the most common fruits in daily life because of its bright color, sweet and sour taste.
Nutritional analysis
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 arteries of the heart, so oranges are foods to prevent coronary heart disease and arteriosclerosis. Studies have confirmed that eating oranges can reduce cholesterol deposited in arterial vessels and help reverse atherosclerosis;
4. In fresh citrus juice, there is a kind of 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.
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. " Orange peel is an important medicine for regulating qi, eliminating dryness, promoting diuresis, resolving phlegm, relieving cough, strengthening spleen and regulating stomach. The orange peel epidermis scraped off the white inner layer is called orange red, which has the functions of regulating lung qi, eliminating phlegm and relieving cough; The fascia on the pulp of orange is called orange collateral, which has the functions of dredging meridians and eliminating phlegm accumulation, and can be used to treat chest tightness, costal pain and intercostal neuralgia. Orange kernel can treat low back pain, hernia pain and other diseases; Orange leaves have the function of soothing the liver, and can be used to treat rib pain and mastitis. Orange meat has the functions of appetizing, regulating qi, relieving cough and moistening lung. Eating oranges often has certain effects on treating acute and chronic bronchitis, cough and asthma in the elderly, lack of body fluid, dyspepsia, alcoholism, polydipsia and chronic stomach diseases.
Oranges are rich in nutrition. Every 100g of orange pulp contains 0.9g of protein, 0. 1 g of fat, 0.2g of carbohydrate12.8g of crude fiber, 56mg of calcium, 0.5mg of phosphorus/kloc-0, 0.2mg of iron, 0.55mg of carotene and 0.08mg of vitamin B. Oranges are flat in nature, sweet and sour in taste, have the effect of promoting fluid production and relieving cough, and are used for gastrointestinal dryness and heat; It has the effect of regulating stomach and diuresis, and is used for abdominal discomfort, dysuria and other diseases; It has the function of moistening lung and resolving phlegm, and is suitable for cough caused by lung heat. Oranges can inhibit staphylococci, increase blood pressure, excite the heart, inhibit gastrointestinal and uterine peristalsis, reduce the brittleness of capillaries and reduce microvascular bleeding. Oranges are good for losing weight.
Related population
It can be eaten by the general population, but it is not suitable for people with cough due to cold and phlegm.
Food phase grams
Oranges eat with crabs, which makes them soft carbuncle. Eating meat with otters makes me sick. Do not eat with betel nut. (Quoted from "Dietary Instructions")
Production instruction
Peel raw food, or wring sweat and take liquid to drink.
Dietetic therapy
Oranges are sweet and sour, cool, and enter the lungs and stomach;
Has the effects of stimulating appetite, regulating qi, quenching thirst and moistening lung;
Indications: qi stagnation in chest septum, vomiting, anorexia, deficiency of stomach yin, thirst in mouth, cough due to lung heat and excessive drinking.
Other related
Citrus and tangerine are both fruit trees belonging to Rutaceae. The fruit has a thick skin and contains pulp petals composed of juice bubbles and seeds. Li Shizhen's compendium of materia medica? "Fruit Department" said: "The orange is small, its petals are slightly sticky (meaning the same as acid), its skin is thin and red, and its taste is bitter and bitter; Citrus is bigger than orange, its petals are fragrant, its skin is slightly thick and yellow, and its leaves are sweet and sweet. " Generally speaking, the fruit shape is round, the color is Huang Chi, the skin is tight and fine, and it is not easy to peel. The juicy and sweet one is called orange. The fruit is oblate, red or yellow in color, thin, smooth and easy to peel, and the taste is slightly sweet and sour. The difference between orange and tangerine is obvious, but it is often confused in common sayings, such as Cantonese orange is also called Cantonese orange, and Mandarin orange is also called Mandarin orange.
"Orange turns into bitter orange" is an old idiom, "Yan Zi Chun Qiu? "Miscellaneous chapter" explains: "Oranges born in Huainan are oranges, while those born in Huaibei are oranges. Their leaves and disciples are similar, but their tastes are actually different, so it's different." Orange tastes sweet and bitter. Due to the difference of soil and water, the orange species in Huainan will become bitter in Huaibei, which means that people's habits will change from good to bad due to the influence of the environment. Poncirus trifoliata, also known as orange, is commonly known as smelly orange, with less pulp and sour taste. Both orange and trifoliate orange belong to Rutaceae, but different species, orange will not become trifoliate orange, and the ancients did not observe it well, which caused misunderstanding.
Su Dongpo, a poet of the Song Dynasty in China and one of the eight masters of the Tang and Song Dynasties, mentioned in "To Liu Jingwen": "A good year must be remembered, especially when it is orange and green".
remarks
1. People with poor gastrointestinal function, eating too many oranges, are prone to the disturbance of gastrobezoar;
2. Oranges contain more calories. If you eat too much at a time, you will get angry and cause stomatitis and periodontitis.
3. Excessive consumption of citrus fruits will cause "orange disease" and cause symptoms such as yellowing of the skin.
Nutrition of Oranges Oranges are high-calorie and low-fat fruits, which contain 0.7 g of protein, 0.6 g of fat and 57 calories per100g.
Oranges have high nutritional value, and are rich in protein, organic acids, vitamins and essential elements such as calcium, phosphorus, magnesium and sodium, which are unmatched by other fruits. Oranges not only have high nutritional value, but also have the effects of invigorating stomach, moistening lung, enriching blood, clearing intestine and facilitating defecation, which can promote wound healing and have a good auxiliary effect on septicemia. In addition, because oranges contain glucocorticoids, which are physiologically active substances, they can reduce blood viscosity and reduce the formation of thrombosis, so they also have a good preventive effect on cerebrovascular diseases, such as cerebral thrombosis and stroke. And orange meat is an ideal food for diabetic patients because it contains ingredients similar to insulin. Motherland medicine also believes that oranges are sweet and sour, cold in nature, and have the effects of regulating qi and resolving phlegm, moistening lung and clearing intestines, enriching blood and strengthening spleen, and can cure diseases such as anorexia, light mouth and indigestion, help digestion, eliminate phlegm and quench thirst, and regulate qi and dissipate stagnation.
50 calories of oranges. Don't drink milk before and after eating oranges 1 hour, because protein in milk will solidify when it meets fruit acid, which will affect digestion and absorption. Oranges should not be eaten more. After eating, you should brush your teeth and rinse your mouth in time to avoid harm to your mouth and teeth.
[Edit this paragraph] Cultivation of oranges
Citrus fruit trees are mycorrhizal plants, which generally have no root hair. Mycorrhiza and citrus trees are born, which absorb nutrients from the trees, help the trees absorb water, nutrition and secrete hormones and enzymes, and promote the life activities of citrus trees.
Citrus buds are naked buds with no scales and only bracts. Because the shoot growth has the habit of "self-shearing", there are no terminal buds, only lateral buds. Citrus buds are compound buds. Buds planted in leaf axils are called axillary buds, and 2 ~ 4 buds can be planted in a leaf axil. Citrus can sprout many times a year, and the buds can be divided into leaf buds and flower buds.
The flowers of citrus are mixed flowers, which have branches, leaves and flowers after germination. There are two kinds of flowers: single flowers and inflorescences: red oranges and satsuma oranges, sweet oranges, lemons and grapefruit have inflorescences besides single flowers, and pomelo is mainly inflorescences. Citrus usually needs pollination and fertilization before fruiting, but satsuma mandarin and navel orange can bear fruit without fertilization. This is parthenocarpy, also called parthenocarpy.
The growth and development period of fruit is called from the time the ovary expands after flowering to the time when the fruit fully grows. There were two physiological fruit drops in this period: the first physiological fruit drop with fruit stalks; Falling off from the honey tray is called the second physiological fruit drop. The fruit drop from the second physiological fruit drop to the fruit drop before harvest is called fruit drop before harvest.
The growth, flowering and fruiting of citrus fruit trees are closely related to environmental conditions such as temperature, sunshine, moisture (humidity), soil, wind, altitude, topography and slope direction, which have the greatest influence on the temperature. Even if the temperature difference is 0.5℃, sometimes there will be completely different results. The growth and development of citrus requires a temperature of12.5 ~ 37℃. In autumn, the day and night temperatures for flower bud differentiation are about 20℃ and 10℃, respectively, and the soil temperature for root growth is roughly the same as that of aboveground parts. If the temperature is too low, the citrus will be frozen. When the sweet orange is -4℃ and the satsuma is -5℃, the branches and branches will be frozen. When the sweet orange is below -5℃ and the satsuma is below -6℃, the plants will freeze to death.
High temperature is also not conducive to the growth and development of citrus. When the air temperature and soil temperature are higher than 37℃, the fruits and roots stop growing. Temperature also has obvious influence on fruit quality: in a certain temperature range, sugar content and soluble solids increase, acid content decreases and quality becomes better with the increase of temperature. Citrus is a tree species with strong shade tolerance, but good sunshine is still needed for high quality and high yield. Generally, areas with annual sunshine hours1200 ~ 2200 hours can grow normally. For example, compared with Chongqing citrus producing area with less sunshine, South China with good sunshine and abundant calories has higher sugar content, lower acid content and higher sugar-acid ratio. Generally, tropical and subtropical regions with annual rainfall of 1000 mm are suitable for citrus planting, but irrigation is often needed because of uneven distribution of annual rainfall. The suitable relative water content of soil is 60% ~ 80%, and if it is lower than 60%, it needs irrigation. Too much rain will cause soil water accumulation or high groundwater level and poor drainage in citrus orchards, which will cause root system death. Citrus fruit trees require that the air relative humidity should be about 75%.
Citrus can adapt to a wide range of soil. Purple soil, red and yellow soil, beach and beach can all grow at pH 4.5 ~ 8, and pH 5.5 ~ 6.5 is the most suitable. The growth of citrus roots requires high oxygen content, and the soil with loose texture, good structure, organic matter content of 2% ~ 3% and good drainage is the most suitable.
There are many ways to propagate citrus seedlings, such as seedling, layering, cutting and grafting. At present, the grafting method is still the best and universal. Grafted citrus seedlings are made up of scions and rootstocks, and commonly used rootstocks are poncirus trifoliata, sour orange, red orange, citron, Zhu Luan, orange, Dizao and sour pomelo. ① Fructus Aurantii, used as the main rootstock of sweet orange and satsuma mandarin. Cold-resistant, drought-resistant, barren-resistant, foot rot, gummosis, nematodes, dwarfing crown, early fruiting, high and stable yield, and improving quality. Orange rootstock is not resistant to split skin disease, humidity and salinity. (2) Red tangerine, which is used as the rootstock of oranges and sweet oranges, has well-developed root system, and is erect after grafting. The fruit is 2-3 years later than that of the stock of trifoliate orange, but it has high yield and resistance to skin cracking when it enters the full fruit stage. (3) Sour orange, with waterlogging resistance, wind resistance, developed root system and foot rot resistance, is an excellent rootstock for banana oranges and ponkan oranges in southern subtropical areas such as Guangdong and Guangxi.
Citrus diseases include foot rot, gummosis, resin disease, scab, anthracnose, scab, yellow spot, powdery mildew, soot disease, damping off and so on. Canker of bacterial diseases; Root nematodiasis and root knot nematodiasis of nematode diseases; Physiological diseases such as oil spot disease, fruit cracking disease and sunburn; Viruses, viroids and diseases of unknown etiology, such as Huanglongbing, peeling, recession, satsuma atrophy, bacterial wilt and citrus yellowing. Insects, mites and other harmful animals are harmful to citrus, and there are more than 350 known species, mainly including mites, scales, whiteflies, aphids, longicorn beetles, brown beetles, leaf miners, fruit-sucking moths, fruit flies and gall midges.
[Edit this paragraph] The origin of oranges
Oranges originated in China, mainly produced in the middle and lower reaches of the Yangtze River and south of the Yangtze River. Thousands of years of cultivation history certainly can't tell the specific location. After Arabs spread all over Eurasia, oranges are still called "China apples" in Holland and Germany. China is one of the important origins of citrus, which is rich in citrus resources, with a variety of excellent varieties and a cultivation history of more than 4,000 years. According to research, it was not until 147 1 year that oranges, tangerines, oranges and other citrus fruit trees were introduced from China to Lisbon, Portugal, and it was not introduced to Florida, USA until 1665.
Citrus in the world is mainly distributed in the area south of 35 north latitude, which is warm and humid, and the area with large water body warming can be pushed north to 45 north latitude. Citrus is produced in 135 countries in the world, with an annual output of102.822 million tons and an area of107.3 million mu, ranking first among the hundred fruits. Brazil ranks first with 24.2526 million tons, and the United States ranks second with16.3352 million tons.
Citrus in China is distributed between north latitude16 ~ 37, with the highest altitude of 2,600 meters (Batang, Sichuan), starting from Sanya in Hainan Province in the south, reaching Shaanxi, Gansu and Henan in the north, Taiwan Province Province in the east and Yarlung Zangbo River Valley in Tibet in the west. However, the economic cultivation areas of citrus in China are mainly concentrated between 20 ~ 33 north latitude and below 700 ~1000 meters above sea level. There are 19 provinces (cities, autonomous regions) in China, including Taiwan Province province. Citrus is mainly produced in Zhejiang, Fujian, Hunan, Sichuan, Guangxi, Hubei, Guangdong, Jiangxi, Chongqing and Taiwan Province 10 provinces (cities, districts), followed by Shanghai, Guizhou, Yunnan, Jiangsu and other provinces (cities), and also cultivated in Shaanxi, Henan, Hainan, Anhui and Gansu provinces. There are 985 counties (cities, districts) planting citrus in China.
[Edit this paragraph] Oranges needed every day
In a study conducted by researchers in Canada, the levels of total cholesterol (TC) and low density lipoprotein cholesterol (LDL-C) in 16 adult males and 9 adult females were higher than normal, and they drank orange juice 1 cup (250ml), 2 cups and 3 cups every day for 4 weeks. The results showed that drinking orange juice 1 cup, 2 cups and 3 cups a day could increase the plasma vitamin C level by 2. 1 fold, 3. 1 fold and 3.8 times respectively after 4 weeks. Drinking three cups of orange juice every day can increase the level of high density lipoprotein cholesterol (HDL-C) by 21%,the level of folic acid by18% and the ratio of LDL/HDL by16% after four weeks. HDL can clear cholesterol in arterial wall and prevent atherosclerosis. Studies suggest that drinking 750ml orange juice every day can effectively improve the blood lipid metabolism of patients with hypercholesterolemia, which is beneficial to cardiovascular health.
[Edit this paragraph] The significance of orange cultivation
Citrus fruit is rich in nutrition, excellent in color, aroma and taste. It can be eaten fresh and processed into various processed products mainly fruit juice. Citrus production ranks first among 100 fruits, and citrus juice accounts for 3/4 of juice, which is widely favored by consumers. According to the analysis of Central Institute of Health, the edible parts of citrus per100g contain 0.05mg of riboflavin, 0.3mg of niacin, 0.9g of ascorbic acid (vitamin C)16g, 0.9g of protein, 0. 1 g of fat, 0/2g of sugar12g of crude fiber. The content of carotene (provitamin A) in orange is second only to apricot and higher than other fruits. Citrus also contains many vitamins, in addition, it also contains elements such as magnesium, sulfur, sodium, chlorine and silicon.
[Edit this paragraph] The benefits of eating oranges
Chinese medicine believes that oranges have the effects of moistening lung, relieving cough, resolving phlegm, strengthening spleen, smoothing qi and quenching thirst, and are excellent fruits for men, women and children (especially the elderly, patients with acute and chronic bronchitis and cardiovascular diseases). Oranges are all treasures: not only the pulp has high medicinal value, but also its skin, core, collaterals and leaves are "authentic medicinal materials". Orange peel, called "Chenpi" as medicine, has the effects of regulating qi, eliminating phlegm, relieving cough, strengthening spleen and regulating stomach, and is often used to prevent and treat chest pain, hernia, breast distension, breast lump, stomachache and dyspepsia. Its stone is called "orange stone", which has the effect of resolving hard mass and relieving pain. It is commonly used in clinic to treat testicular swelling and pain, mastitis swelling and pain. Orange collaterals, that is, the reticular meridians on the pulp of orange, have the effects of dredging collaterals, resolving phlegm, smoothing qi and promoting blood circulation, and are often used to treat phlegm stagnation and cough. Because orange collaterals are rich in vitamin P, it can effectively prevent and treat hypertension, and the elderly eat more, which is good for health. Orange leaves have the effects of soothing the liver, regulating qi, reducing swelling and removing toxic substances, and are important drugs for treating hypochondriac pain and breast pain. The white inner layer of orange peel is scraped off, and only the epidermis is called "orange red", which has the effects of regulating lung qi and eliminating phlegm, and is often used to treat cough and hiccup in clinic.
Oranges are rich in sugars (glucose, fructose, sucrose), vitamins, malic acid, citric acid, protein, fat, dietary fiber and various minerals, etc. A recent study by Australian scientific and industrial research institutions shows that eating 1 orange a day can prevent people from attacking certain cancers (such as oral cancer, laryngeal cancer and gastric cancer).
[Edit this paragraph] The disadvantages of eating oranges
Although oranges have many benefits, they should be eaten often rather than much. Chinese medicine believes that oranges are warm and easy to get angry when eaten more, which will lead to symptoms such as sore mouth, dry mouth, dry throat and constipation. Because orange pulp contains certain organic acids, it is best to eat oranges on an empty stomach in order to avoid irritation to gastric mucosa and discomfort. In addition, oranges also contain a lot of carotene. If you eat too much at one time or eat too much continuously in the near future, the high concentration of carotene in your blood will lead to yellow skin. At this time, besides drinking more water and not eating orange fruits for the time being, we should also limit the intake of foods rich in carotene. After 1 month, the skin color will return to normal.
[Edit this paragraph] Oranges and Medicine
In the report Diet, Nutrition and Prevention of Chronic Diseases, the World Health Organization proposed that citrus fruits can effectively prevent the occurrence of cardiovascular diseases. Folic acid in citrus fruits can reduce plasma homocysteine, which can damage arterial blood vessels and is a risk factor for cardiovascular diseases. Citrus fruits are rich in potassium, which helps to regulate blood pressure and maintain normal heart rhythm. Vitamin C, carotenoids and flavonoids all have anti-lipid oxidation effects, which can prevent the occurrence and development of atherosclerosis.
The Commonwealth Scientific and Industrial Research Organization of Australia reviewed and analyzed 48 studies on citrus fruits and diseases, and found that eating one fruit (non-citrus) every day can reduce the risk of stroke by 4%, while eating one orange fruit every day can reduce the risk of stroke by19%. This fully shows that citrus fruits have extraordinary cardiovascular protective effects.
Oranges can be eaten often, but don't eat too much. It is recommended to eat1-3 oranges every day. Eating too much at a time is easy to get angry, which can promote stomatitis or periodontitis, and may cause yellowing of the skin.
[Edit this paragraph] Oranges are made into delicacies.
Orange peel porridge: When cooking rice porridge,
Before the porridge is boiled, put a few pieces of clean orange peel. After the porridge is cooked, it is not only fragrant and delicious, but also appetizing. It can play a role in diet therapy for people with full chest and abdomen or cough and phlegm.
Orange peel soup: when making broth or sparerib soup, put a few pieces of orange peel, which not only tastes delicious, but also has a faint orange flavor, which will make people feel greasy.
Orange peel tea: Cut the cleaned orange peel into shreds, dices or blocks. When it is used, it can be brewed with boiled water alone or drunk with tea. It not only tastes fragrant, but also has appetizing, ventilating and refreshing effects.
Orange peel wine: soak the washed and dried orange peel in white wine, and you can drink it after about 20 days. Orange wine has the effect of clearing lung-heat and resolving phlegm. If the soaking time is a little longer, the wine tastes better.
Orange peel vegetables: after eating oranges, collect fresh orange peels, clean them, soak them in clear water for 2 days, then cut them into filaments, and then marinate them with white sugar for 20 days, which becomes a very delicious appetizer. It not only tastes sweet and refreshing, but also has the effect of hangover relief.
Diced orange peel: Remove the pedicel and rotten parts of fresh orange peel, wash it with clear water, drain it, cut it into diced pieces with a knife, and then marinate it in honey or white sugar for 20 days. It can be used as stuffing for sweet foods such as sugar packets and glutinous rice balls, which tastes refreshing and sweet.
Spiced orange peel: soak the clean orange peel in clear water for one night, remove the pedicels, heads and moldy parts, squeeze dry, boil in a boiling water pot for 30-40 minutes, then squeeze out the water and drain, then cut into small pieces 1 cm square, boil in the pot for 30 minutes according to the ratio of 500 grams of wet orange peel and 20 grams of salt, and sprinkle a layer of licorice while wet. It has a long taste and has the function of medication.
Orange peel jam: orange peel can be used as jam, either dry or fresh. First, wash the orange peel with water, put it in a pot and add water to boil for several minutes, then pour out the water, add new water and boil for several minutes, and so on for 3-4 times until the orange peel water is not too bitter. Then squeeze the orange peel dry by hand or cloth, and chop it into pieces with a knife. The more broken the better, the better if it can be finely ground with a meat grinder. Put the chopped orange peel back into the pot, add appropriate amount of brown sugar, white sugar and saccharin according to the amount of orange peel, add a little water, boil it and simmer it to a thick paste, and the orange peel jam will be ready.
Su Shi once wrote a poem: "You must remember the good scenery in a year, especially when it is orange, yellow and green". Although modern people are confused about oranges and tangerines, both oranges and tangerines have rich nutritional value. Oranges contain vitamin C, calcium, fiber, a small amount of protein and fat, and are rich in glucose, fructose, sucrose, malic acid, citric acid, carotene, thiamine, riboflavin, nicotinic acid and ascorbic acid, which can reduce cholesterol and prevent coronary heart disease and arteriosclerosis. The nutritional value of oranges is also high. Besides water, the pulp mainly contains vitamin C, malic acid, succinic acid, sugar and pectin. It can stimulate appetite, quench thirst, help digestion and prevent constipation.
Citrus is a native plant in China, and its cultivation has a long history of nearly 4000 years. There are many varieties, including: early orange, milk orange, water orange, wrapped orange, warm orange, kumquat, sand orange, tangerine and cotton orange. In our country, oranges also represent "auspiciousness" and "reunion". In many places, people get married, have a new house and eat oranges, which means having a baby early. In ancient times, it was very common to use oranges as place names: Xiaoxiang has orange township, Dongting has orange lane, Pengze has orange market, Changsha has orange island and so on.
Oranges are all treasures, and their flesh, skin, core and collaterals can be used as medicine. The exocarp of an orange is called "Chenpi" after it is dried (it is named Chenpi because it is used as medicine for its good efficacy). The white reticular silk on the orange pulp, called "orange silk", contains a certain amount of vitamin P, which has the effects of dredging collaterals, resolving phlegm, regulating qi and eliminating stagnation. The orange pit is bitter and nontoxic, and has the function of relieving pain with qi. It can be used to treat hernia and low back pain. Even orange roots and leaves can be used as medicine, which has different functions such as soothing liver, strengthening spleen and regulating stomach. Citrus pulp is also an important raw material for light industry, which can be processed into canned food, candied fruit, jam, fruit cake, peptone and fructose, and can also be made into drinks such as fruit juice and fruit wine. Pectin, citric acid, hesperidin and essential oil can be extracted during processing, and orange peel can be used as raw materials for extracting vitamin A, vitamin P and vitamin C.. Orange peel also has many clever uses in daily life. It can beautify and protect skin, clean porcelain with tea rust, deodorize and be used as fertilizer.
However, although oranges are good, don't be greedy!
1, eating too many oranges causes stones.
Oranges are rich in water and nutrients, and contain a lot of more than ten kinds of nutrients such as vitamin C, citric acid and glucose. Proper consumption can nourish the body, especially for patients with chronic hepatitis and hypertension, eating tangerine can improve the detoxification of liver, accelerate the transformation of cholesterol and prevent arteriosclerosis. Proper consumption can increase appetite, but improper consumption is useless.
2. Children should not eat more oranges.
Oranges are rich in carotene. If eaten in large quantities, about 500 grams a day for two months, hypercarotene may appear, which is manifested by yellow skin on hands and feet, gradually infecting the whole body, accompanied by nausea, vomiting, loss of appetite, general fatigue and other symptoms, and sometimes easily confused with hepatitis.
Carotene is converted into vitamin A in the liver, but a large amount of carotene can not be converted in time in children's liver, so it is deposited all over the body with blood and has adverse reactions to the body.
Some children who eat too many oranges will also have what Chinese medicine calls "getting angry", such as glossitis, periodontitis and pharyngitis. Therefore, we think children should not eat more oranges. If you eat for a long time, stop eating 1~2 weeks before eating.
Pay attention to the following points when eating oranges:
First, control the consumption.
It is measured that eating three oranges a day can meet a person's daily demand for vitamin C. If you eat too much and take too much vitamin C, your body will metabolize more oxalic acid, which will easily lead to urinary calculi and kidney calculi.
Second, oranges should not be eaten with radishes.
In recent years, through a large number of clinical observations, scientists have found that cruciferous vegetables such as radish can quickly produce a substance called thiocyanate after being ingested by human body, and it will be metabolized to produce an antithyroid substance-thiocyanate. The amount of this substance produced is directly proportional to the amount of intake. At this time, if you ingest fruits containing a lot of plant pigments, such as oranges, pears, apples, grapes, etc., the flavonoids in them can strengthen the role of thiocyanic acid in inhibiting thyroid gland after being decomposed by bacteria in the intestine, thus leading to goiter.
Therefore, experts remind people that it is not advisable to eat fruits such as oranges, apples and grapes immediately after eating cruciferous vegetables such as radishes. So you should pay attention when eating these foods!
Third, oranges and milk should not be eaten together.
Protein in milk can easily react with fruit acid and vitamin C in oranges, and solidify into blocks, which not only affects digestion and absorption, but also causes abdominal distension, abdominal pain, diarrhea and other symptoms.
In addition, elderly people with deficiency and cold of gastrointestinal, kidney and lung functions should not eat more, so as not to induce abdominal pain, soreness of waist and knees and other symptoms.
Pregnant women should not eat more than three oranges a day, and the total weight should be less than 250 grams.
[Edit this paragraph] A coup to eat oranges
Tips for sweetening sour oranges
Winter is the best season for oranges. However, sometimes you will encounter sour oranges. At this time, there is a way to turn sour oranges into sweet oranges. The method is super simple. Put the oranges in the basket of the bicycle and walk around. When you come back, try the oranges in the basket again. Ah, it's incredible. The sour orange somehow turned into a sweet orange. In winter, people generally like to stay indoors and push their bicycles around, which can just alleviate the lack of exercise, and eating oranges can get vitamin C. It's really killing two birds with one stone for beauty and health. You must try it.
Put the oranges in the bicycle basket and walk around the neighborhood. Why do oranges get sweet? After using this method, will oranges really become sweet? By detecting the components of oranges, we can find that the sugar content of sour oranges is 1 1.6, and the sugar content is still 1 1.6 after using this method. But when you eat it, you will obviously feel sweet. In fact, the change of sweetness is related to the difference of acidity contained in oranges. Oranges contain both sweet sugar and sour acid. Acid is easily impacted, so it will decrease after being impacted. In other words, because the acid is reduced, it will feel sweet. Check the acidity. Before using this method, it was 6.6, but after using it, it became 2. 1. Due to the shaking of the bicycle basket, the acid was impacted, so it was reduced. This will make oranges sweet, but I don't agree to give them too much impact. An impact of the same magnitude as a bicycle basket is most appropriate.
[Edit this paragraph] Three taboos of oranges