Introduction of raw materials
Oranges are ripe fruits of many kinds of oranges in Rutaceae, such as Fuju or Zhuju. Oranges, together with oranges, are often called citrus. Because of their bright color, sweet and sour taste, they are one of the most common fruits in daily life.
Nutritional analysis
1. Oranges are rich in vitamin C and citric acid, the former has the function of beautifying, and the latter has the function of eliminating fatigue;
2. The thin endothelium of oranges contains dietary fiber and pectin, which can promote defecation 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. Studies have confirmed that eating oranges can reduce cholesterol deposited in arterial blood vessels and help reverse atherosclerosis;
4. 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, multiply the activity of detoxification enzymes in human body, prevent carcinogens from damaging the nucleus and protect the integrity of genes.
The flesh, skin, collaterals, stones 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 supplement is the supplement; Laxative diarrhea; The same liter of medicine will go up; The same medicine will be dropped. " Orange peel is an important medicine for regulating qi, eliminating dampness, promoting diuresis, resolving phlegm, relieving cough, strengthening spleen and regulating stomach. The orange peel epidermis scraped off by the white inner layer is called orange red, which has the functions of regulating lung qi, resolving phlegm and relieving cough; The fascia on orange pulp is called orange collateral, which has the functions of dredging meridians and eliminating phlegm stagnation, and can be used to treat chest tightness, costal pain, intercostal neuralgia and so on. Orange pit 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 costalgia and mastitis. Orange meat has the functions of appetizing, regulating qi, relieving cough and moistening lung. Eating oranges often has a certain effect on treating acute and chronic bronchitis, cough and asthma in the elderly, insufficient body fluid, indigestion, alcoholism, polydipsia and chronic stomach diseases.
Oranges are rich in nutrition. Every100g of orange meat contains 0.9g of protein, 0. 1 g of fat, 0.2g of carbohydrate1.2g of crude fiber, 56mg of calcium, 0.5mg of phosphorus1.5mg of iron, 0.55mg of carotene, and 0.0mg of vitamin B. Three oranges are flat, sweet and sour, have the effect of promoting fluid production and relieving cough, and have the effect of regulating stomach and diuresis, and are used for abdominal discomfort, dysuria and other diseases; It has the function of moistening lung and resolving phlegm, and is suitable for cough due to lung heat. Oranges can inhibit staphylococci, raise blood pressure, excite the heart, inhibit gastrointestinal and uterine peristalsis, reduce the fragility of capillaries and reduce microvascular bleeding. Oranges are good for losing weight.
Related population
The general population can eat it, but it is not suitable for people with colds, coughs and excessive phlegm.
Grams of food stage
Oranges and crabs eat together to make them soft. Eating meat with otters makes me sick. Don't eat with betel nut. (Quoted from Dietary Guide)
manufacture order
Peel raw food, or wring sweat and drink liquid.
food 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 and diaphragm, vomiting, anorexia, deficiency of stomach yin, dry mouth, cough due to lung heat, and excessive drinking.
Other related
Citrus and orange 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, the petals are slightly sticky (meaning the same acid), the skin is thin and red, and the taste is bitter and bitter; Citrus is bigger than orange, with fragrant petals, slightly thick yellow skin and sweet leaves. " Generally speaking, the fruit shape is round, the color is Huang Chi, the skin is dense 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 tastes slightly sweet and sour. The difference between oranges and tangerines is obvious, but they are often confused in common sayings. For example, Cantonese oranges are also called Cantonese oranges, and tangerines are also called tangerines.
"Orange gives birth to bitter orange" is an old idiom, "Yan Zi Chun Qiu?" Miscellaneous chapters explain: "Those born in Huainan are oranges, and those born in Huaibei are oranges. Their leaves are similar to those of their disciples, but their tastes are actually different, so they are different. "Oranges taste 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 because of the influence of the environment. Fructus Aurantii, also known as orange, is commonly known as smelly orange, with less pulp and sour taste. Oranges and Fructus Aurantii belong to Rutaceae, but different species, oranges will not become Fructus Aurantii, and the ancients did not observe them well, which caused misunderstanding.
Su Dongpo, a poet in the Song Dynasty and one of the eight great poets in the Tang and Song Dynasties, mentioned in To Liu Jingwen that "a good year should be remembered, especially when oranges are green".
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1. People with poor gastrointestinal function, eating too many oranges, are prone to gastrolithiasis disorder;
2. Oranges contain more calories. If you eat too much at one 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, containing 0.7 g of protein, 0.6 g of fat and 57 calories per 100 g. ..
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 incomparable to other fruits. Oranges not only have high nutritional value, but also have the effects of invigorating stomach, moistening lung, enriching blood, clearing bowel and relaxing bowels, which can promote wound healing and have a good auxiliary effect on septicemia. In addition, because oranges contain glucocorticoid, which is a physiologically active substance, it can reduce blood viscosity and reduce the formation of thrombosis, so it also has a good preventive effect on cerebrovascular diseases, such as cerebral thrombosis and stroke. Orange meat is an ideal food for diabetics 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 intestine, enriching blood and strengthening spleen, which can cure anorexia, pale mouth and indigestion, help digestion, resolve phlegm and quench thirst, regulate qi and disperse 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. Brush your teeth and rinse your mouth in time after eating to avoid harm to your mouth and teeth.
[Edit this paragraph] Citrus cultivation
Citrus fruit trees are mycorrhizal plants and generally have no root hairs. Mycorrhiza and citrus trees were born. They absorbed nutrients from trees, helped trees absorb water, nutrients and secrete hormones and enzymes, and promoted the life activities of citrus trees.
Citrus buds are naked buds with no scales and only bracts. Because the growth of new shoots has the habit of "self-cutting", there is no terminal bud, 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 one leaf axil. Citrus can germinate many times a year, and the buds are divided into leaf buds and flower buds.
The flowers of citrus are mixed flowers, which have branches, leaves and flowers after germination. Flowers are divided into single flowers and inflorescences: red orange and satsuma mandarin, sweet orange, lemon and grapefruit have inflorescences besides single flowers, and pomelo is mainly inflorescence. Citrus usually needs pollination and fertilization to bear fruit, but mandarin oranges and navel oranges can bear fruit without fertilization. This is parthenocarpy, also called parthenocarpy.
The period of fruit growth and development, from the time when the ovary expands after flowering to the time when the fruit grows completely, is called the fruit growth and development period. There were two physiological fruit drops in this period: the first physiological fruit drop with fruit stalk; What falls 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, among which temperature has the greatest influence. Even if the temperature difference is 0.5℃, sometimes there will be completely different results. The growth and development of citrus need a temperature of 65438 02.5 ~ 37℃. The day and night temperatures of flower bud differentiation in autumn are about 20℃ and 65438 00℃, respectively, and the soil temperature of root growth is roughly the same as the ground temperature. If the temperature is too low, oranges will be frozen. When the sweet orange is at -4℃ and the satsuma orange is at -5℃, the branches and leaves will be frozen. When the sweet orange is below -5℃ and the satsuma orange 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℃, fruits and roots stop growing. Temperature also has obvious influence on fruit quality: in a certain temperature range, with the increase of temperature, the sugar content and soluble solids increase, the acid content decreases and the quality becomes better. Citrus is a tree species with strong shade tolerance, but good sunshine is needed for high quality and high yield. Generally, areas with annual sunshine hours 1200 ~ 2200 hours can grow normally. For example, compared with Chongqing citrus producing areas with less sunshine, South China with good sunshine and abundant calories has higher sugar content, lower acid content and higher sugar and acid content. Generally, tropical and subtropical regions with annual rainfall of about 1000mm 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 irrigation is needed when it is lower than 60%. Too much rain will cause soil water accumulation or high groundwater level and poor drainage in citrus orchards, resulting in root death. Citrus fruit trees require that the air relative humidity should be around 75%.
Citrus can adapt to a wide range of soils. Purple soil, red and yellow soil, beaches and beaches can all grow at pH 4.5 ~ 8, and pH 5.5 ~ 6.5 is the most suitable. The growth of citrus roots needs 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 propagation methods of citrus seedlings, such as seedling raising, layering, cutting and grafting. At present, grafting is still the best and most common method. Citrus grafted seedlings are composed of scions and rootstocks. Commonly used rootstocks are citrus grandis, lime, red orange, citron, Zhu Luan, orange, jujube and sour pomelo. ① Fructus Aurantii is used as the main rootstock of sweet orange and mandarin orange. Cold resistance, drought resistance, barren resistance, rotten feet, gummosis, nematodes, dwarfing crown, early fruiting, high and stable yield and improved quality. Orange rootstock is not resistant to spalling, humidity and salinity. (2) Red orange, which is used as the rootstock of oranges and sweet oranges, has developed root system and stands upright after grafting. The fruit is 2-3 years later than the stock of trifoliate orange, but it enters the full fruit stage, with high yield and anti-cracking. (3) Lime, with waterlogging resistance, wind resistance, developed root system and resistance to root rot, is an excellent rootstock for banana oranges and ponkan in southern subtropical areas such as Guangdong and Guangxi.
Citrus diseases include foot rot, gummosis, resin disease, scab, anthracnose, scab, macular disease, powdery mildew, soot disease, damping-off disease and so on. Bacterial disease of ulcer; Root nematodiasis and root-knot nematodiasis; Physiological diseases such as oil spot disease, fruit cracking disease and sunburn; Viruses, viroids and diseases of unknown etiology, such as Huanglongbing, peeling, decline, satsuma atrophy, bacterial wilt, citrus yellowing, etc. There are more than 350 known species of pests such as insects and mites, mainly including mites, scale insects, whiteflies, aphids, longicorn beetles, leaf miners, fruit sucking moths, fruit flies and gall midges.
[Edit this paragraph] The origin of oranges
Oranges are native to 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, with rich citrus resources and excellent varieties, and its cultivation history is over 4,000 years. According to textual research, it was not until A.D. 147 1 year that oranges, tangerines and other citrus fruit trees were introduced from China to Lisbon, Portugal, and in A.D. 1665 to Florida, USA.
Citrus in the world is mainly distributed in the area south of 35 north latitude, which is warm and humid, and the area with warmer water body can be pushed northward to 45 north latitude. Citrus is produced in 135 countries in the world, with an annual output of102822 million tons and an area of 1073 million mu, ranking first among the hundred fruits. Brazil's output is the first 124,252,600 tons, followed by the United States,16,335,200 tons, and China is the third.
Citrus in China is distributed between north latitude 16 ~ 37, with the highest elevation of 2,600 meters (Batang, Sichuan), starting from Sanya, 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 planting 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 (municipalities and autonomous regions) producing citrus in China, including Taiwan Province province. Citrus is mainly produced in Zhejiang, Fujian, Hunan, Sichuan, Guangxi, Hubei, Guangdong, Jiangxi, Chongqing and Taiwan Province provinces 10 provinces (cities, districts), followed by Shanghai, Guizhou, Yunnan and Jiangsu provinces (cities), and also cultivated in Shaanxi, Henan, Hainan, Anhui and Gansu provinces. Citrus is grown in 985 counties (cities, districts) in China.
[Edit this paragraph] Oranges needed every day
In a study conducted by Canadian researchers, the total cholesterol (TC) and low density lipoprotein cholesterol (LDL-C) levels of 16 adult men and 9 adult women 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 1 cup, 2 cups and 3 cups of orange juice every 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 glasses of orange juice every day can increase the level of high-density lipoprotein cholesterol (HDL-C) by 265,438+0%, the level of folic acid by 65,438+08% and the ratio of low-density lipoprotein to high-density lipoprotein by 65,438+06% after four weeks. HDL can remove cholesterol from arterial wall and prevent atherosclerosis. It is believed that drinking 750ml orange juice every day can effectively improve the blood lipid metabolism of patients with hypercholesterolemia and is beneficial to cardiovascular health.
[Edit this paragraph] The significance of citrus cultivation
Citrus fruits are rich in nutrition and good in color, smell and taste. It can be eaten fresh or 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 the Central Institute of Health, the edible part of citrus contains 0.05mg of riboflavin, 0.3mg of nicotinic acid, 0.6 mg of ascorbic acid (vitamin C), 0.9g of protein, 0. 1g of fat, 0/2g of sugar 12g of crude fiber and 0.2g of inorganic salt. The content of carotene (provitamin A) in citrus is second only to apricot and higher than other fruits. Citrus also contains a variety of 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, promoting qi circulation 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 treasures: not only the pulp has high medicinal value, but also its skin, core, collaterals and leaves are "authentic medicinal materials". Orange peel, medically known as "dried tangerine peel", has the effects of regulating qi, resolving 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 dispersing stagnation and relieving pain. Clinically, it is often used to treat testicular swelling and pain and mastitis swelling and pain. Orange collaterals, that is, reticular meridians on orange pulp, have the effects of dredging collaterals, eliminating phlegm, promoting qi circulation and promoting blood circulation, and are often used to treat phlegm and blood stasis cough. Because orange collaterals are rich in vitamin P, it can effectively prevent and treat hypertension, and it is good for the elderly to eat more. Orange leaves have the effects of soothing the liver, regulating qi, reducing swelling and detoxifying, and are important drugs for treating hypochondriac pain and breast swelling 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 resolving 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. A recent study by Australian scientific and industrial research institutions shows that eating/kloc-0 oranges a day can protect people from 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 more often than more. Chinese medicine believes that oranges are warm and easy to get angry when eaten too much, which will lead to symptoms such as aphtha, dry mouth, dry throat and constipation. Because orange pulp contains certain organic acids, in order to avoid irritation and discomfort to gastric mucosa, it is best to eat oranges on an empty stomach. 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 concentration of carotene in the blood is high, which will lead to yellowing of the skin. At this time, in addition to drinking more water, we should not eat orange fruits for the time being, and we should also limit the intake of foods rich in carotene. /kloc-After 0/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 kind of fruit (non-citrus) every day can reduce the stroke risk by 4%, while eating one kind of orange fruit every day can reduce the stroke risk by 19%. This fully shows that citrus fruits have extraordinary cardiovascular protection.
You can eat oranges often, but don't eat too much. It is recommended to eat 1-3 oranges every day. Eating too much at a time is easy to get angry, which will promote stomatitis or periodontitis and may also lead to yellowing of the skin.
[Edit this paragraph] Oranges are made into delicious food.
Orange peel porridge: When cooking rice porridge,
Before the porridge is cooked, put some clean orange peels. After the porridge is cooked, it is not only fragrant and delicious, but also appetizing. It can play the role of dietotherapy for people with fullness in chest and abdomen or cough and phlegm.
Orange peel soup: when making broth or sparerib soup, put a few pieces of orange peel, which is not only delicious, but also has a faint orange flavor, which will make people feel greasy.
Orange peel tea: cut the washed orange peel into silk, diced or pieces. When in use, it can be brewed with boiled water alone or made into tea for drinking. It not only tastes fragrant, but also has the effects of appetizing, ventilation and refreshing.
Orange peel wine: soak the washed and dried orange peel in white wine and drink it in about 20 days. Orange wine has the effect of clearing lung-heat and resolving phlegm. If the soaking time is longer, the wine will taste 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 pedicels and rotten parts of fresh orange peel, wash with clear water, drain water, cut into cubes with a knife, and then marinate with honey or sugar for 20 days. It can be used as stuffing for sweets such as sugar packets and glutinous rice balls, and has a refreshing and sweet taste.
Spiced orange peel: soak the clean orange peel in clear water overnight, remove pedicels, heads and moldy parts, squeeze dry, put it in a boiling water pot for 30-40 minutes, then squeeze it out and drain it, then cut it into small pieces 1 cm square, and put it in a pot for 30 minutes according to the ratio of 500 grams of wet orange peel to 20 grams of salt. After taking out, sprinkle a layer of licorice powder while wet. It tastes very long and has the effect of drug treatment.
Orange peel jam: orange peel can be used to make jam, dry or fresh. First, wash the orange peel with clear water, put it in a pot and add water to boil for a few minutes, then pour out the water, add new water to boil for a few minutes, and repeat this 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 with a knife. The more ground the better, the better if it can be ground with a meat grinder. Put the cut 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: "A good scenery in a year, especially orange, yellow and green". Although modern people are confused about oranges and oranges, oranges and oranges 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 lower cholesterol and prevent coronary heart disease and arteriosclerosis. Oranges also have high nutritional value. In addition to water, pulp mainly contains vitamin C, malic acid, succinic acid, sugar and pectin. It can stimulate appetite and 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 China, oranges also represent "auspiciousness" and "reunion". In many places, people get married, have new houses and eat oranges, which means having children early. In ancient times, it was very common to use oranges as place names: Xiaoxiang had orange township, Dongting had orange lane, Pengze had orange market, Changsha had orange island and so on.
Oranges are all treasures, and pulp, skin, core and collaterals can all be used as medicine. The exocarp of an orange is called "Chenpi" after drying in the sun (named Chenpi because of its good medicinal effect). The white reticular silk on orange meat, called "orange silk", contains a certain amount of vitamin P, which has the effects of dredging collaterals, resolving phlegm, regulating qi and resolving food stagnation. Orange stone tastes bitter and nontoxic, and has the function of promoting qi circulation and relieving pain. Can be used for treating hernia and lumbago. Even the roots and leaves of oranges can be used as medicine, which has different effects such as soothing the liver, strengthening the spleen and regulating the 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, fructose, fruit juice, fruit wine and other beverages. 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 ingenious 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 leads to 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 oranges can improve the detoxification ability of the liver, accelerate the transformation of cholesterol and prevent arteriosclerosis. Proper consumption can increase appetite, but improper consumption is useless.
Children should not eat more oranges.
Oranges are rich in carotene. If eaten in large quantities, about 500 grams a day for two consecutive months, high carotene may appear, which is manifested as yellowing of hands and feet and gradually infecting the whole body, accompanied by symptoms such as nausea, vomiting, loss of appetite and general fatigue, 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 in the whole body with blood and has adverse reactions to the body.
Some children eat too many oranges, and there will be what Chinese medicine calls "getting angry", such as glossitis, periodontitis and pharyngitis. Therefore, we think that 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 consumption.
According to the measurement, 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, don't eat oranges 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, which will metabolize to produce an antithyroid substance-thiocyanate. The production of this substance is in direct proportion to the intake. At this time, if you eat fruits containing a lot of plant pigments, such as oranges, pears, apples, grapes and so on. After the flavonoids are decomposed by bacteria in the intestine, the inhibitory effect of thiocyanate on thyroid can be strengthened, resulting in 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 be careful 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 lumps, 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 lime
Winter is the best season for oranges. However, limes are sometimes encountered. At this time, there is a way to turn lime into sweet orange. The method is super simple. Put the oranges in the basket of the bike and walk around. Try the oranges in the basket again when you come back. Ah, that's incredible. The lime somehow turned into a sweet orange. In winter, people generally like to stay indoors and push bicycles around, which can just alleviate the lack of exercise, and eating oranges can also get vitamin C, which is really killing two birds with one stone, both beautiful and healthy. You must try.
Put the oranges in the bicycle basket and take a walk nearby. Why do oranges get sweet? After using this method, will oranges really become sweet? By detecting the components of oranges, it can be found that the sugar content of lime is 1 1.6, and the sugar content is still 1 1.6 after this method. But you will obviously feel sweet when you eat it. In fact, the change of sweetness is related to the different acidity of oranges. Oranges contain both sweetness and sourness. Acids are vulnerable to impact, so they will decrease after impact. In other words, because the acid is reduced, it feels sweet. Check the acidity. Before using this method, it was 6.6, and after using it, it became 2. 1. Because the bicycle basket shakes, the acid is impacted, so it is reduced. This will make the orange sweet, but I don't agree to give it too much impact. The impact of the same size as the bicycle basket is the most suitable.
[Edit this paragraph] Three taboos of oranges