Information and riddles about oranges

Orange (Citrus reticulata) is a fruit in the genus Citrus of the Rutaceae family, and can also be commonly known as "orange". "Ju" (ju) and "桔" (jié) are both standard words in modern Chinese. When "ju" is pronounced as jú, it is the common word for "orange". Oranges are brightly colored, sweet and sour, and are a common delicious fruit in autumn and winter. Oranges are sweet and sour, cool in nature, enter the lung and stomach meridian; have the effects of appetizing, regulating qi, quenching thirst and moisturizing the lungs; they are mainly used to treat qi in the chest, vomiting, lack of food, insufficient stomach yin, thirst in the mouth, lung-heat cough and excessive drinking. Oranges are also very nutritious. One orange almost meets the daily vitamin C requirement of the human body. Oranges contain more than 170 plant compounds and more than 60 flavonoids, most of which are natural antioxidants. The rich nutrients in oranges have the effects of lowering blood lipids and resisting atherosclerosis, which are of great benefit in preventing the occurrence of cardiovascular diseases. Orange juice contains a substance called "nomilin", which has the ability to inhibit and kill cancer cells, and has a preventive and therapeutic effect on gastric cancer.

Introduction to raw materials

Oranges are the mature fruits of various tangerine types such as Rutaceae plants such as Lucky orange or Vermilion orange. Oranges are often collectively referred to as tangerines together with tangerines. They are brightly colored, sweet and sour, and 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 a beautifying effect and the latter has a fatigue-relieving effect;

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

3. Hesperidin can strengthen the toughness of capillaries, lower blood pressure, and expand the coronary arteries of the heart, so oranges It is a food that prevents coronary heart disease and arteriosclerosis. Studies have confirmed that eating citrus can reduce the cholesterol deposited in arteries and help reverse atherosclerosis;

4. In fresh citrus juice , there is a substance "Nomilin" with strong anti-cancer activity, which can decompose carcinogenic chemicals, inhibit and block the growth of cancer cells, double the activity of detoxification enzymes in the human body, and prevent carcinogens from attacking Damage to the cell nucleus protects the integrity of genes.

Orange flesh, skin, collaterals, core, and leaves are all medicinal. Orange peel, also known as tangerine peel, is one of the important medicines. "Compendium of Materia Medica" says that tangerine peel is "tonic when used together with tonics; diarrhea when used with laxatives; ascending when used with ascending drugs; descending when used with descending drugs." Orange peel is used to regulate qi, remove dryness, diuresis, reduce phlegm, relieve cough, and strengthen the body. An important medicine for the spleen and stomach; scraping off the white inner layer of the orange peel is called orange peel, which has the functions of regulating lung qi, eliminating phlegm, and relieving cough; the fascia on the orange pulp is called orange collaterals, which has the functions of clearing the meridians and eliminating phlegm. It has the function of soothing the liver and can treat chest tightness, rib pain, intercostal neuralgia and other symptoms; orange core can treat low back pain, hernia pain and other symptoms; orange leaves have a soothing effect on the liver and can treat rib pain and the onset of mastitis; orange meat has It has the functions of appetizing, regulating qi, relieving cough and moisturizing the lungs. Regular consumption of oranges has certain effects on treating acute and chronic bronchitis, elderly cough and asthma, insufficient body fluids, indigestion, alcohol-induced polydipsia, chronic gastric diseases, etc.

Oranges are rich in nutrients. Each hundred grams of orange pulp contains 0.9 grams of protein, 0.1 grams of fat, 12.8 grams of carbohydrates, 0.4 grams of crude fiber, 56 mg of calcium, 15 mg of phosphorus, and 0.2 mg of iron. , carotene 0.55 mg, vitamin B 0.08 mg, vitamin B2 0.3 mg, niacin 0.3 mg, vitamin C 34 mg, as well as hesperidin, citric acid, malic acid, citric acid and other nutrients. Oranges are neutral in nature, sweet and sour in taste, have the effect of promoting body fluids and relieving coughs, and are used for gastrointestinal dryness and heat. They have stomach and diuretic effects, and are used for abdominal discomfort and difficulty in urination. They have the effect of moistening the lungs and reducing phlegm, and are suitable for treating lung heat. Cough syndrome. Oranges can inhibit Staphylococcus aureus, increase blood pressure, excite the heart, inhibit gastrointestinal and uterine peristalsis, reduce the fragility of capillaries, and reduce microvascular bleeding. Oranges are good for weight loss.

Relevant groups

The general population can consume it, but people with cough due to wind-cold and cough due to phlegm and fluids should not consume it.

Foods that are incompatible

Oranges and crabs can cause soft carbuncles. Eating meat with otters is disgusting. Do not eat with betel nut.

(Quoted from "Dietary Instructions")

Production Instructions

Peel the skin and eat it raw, or sweat it out and drink it.

Therapeutic effects

Oranges are sweet and sour, cool in nature, and enter the lungs and stomach meridians;

It has the effects of appetizing, regulating qi, quenching thirst and moisturizing the lungs;

It is mainly used to treat qi in the chest septum, vomiting, lack of food, stomach yin deficiency, thirst in the mouth, cough due to lung heat and excessive drinking.

Other related

Mandarin oranges and tangerines are both fruit trees belonging to the Rutaceae family. The fruits have a thick outer skin and a pulp composed of juice bubbles and seeds inside. Li Shizhen's "Compendium of Materia Medica? Fruit Part" said: "Orange is small in fruit, its petals taste slightly vinegary (the same meaning as sour), its skin is thin and red, and its taste is pungent and bitter; tangerine is larger than tangerine, its petals taste vinegary, and its skin Slightly thick and yellow, the leaves are pungent and sweet. "Generally speaking, the fruit is round in shape, yellow-red in color, with tight skin and fine lines that are difficult to peel. The juicy and sweet fruit is called tangerine; the fruit is oblate in shape, red or yellow in color, and has a thin skin. The ones that are thin, smooth, easy to peel, and have a slightly sweet and sour taste are called tangerines. The difference between tangerines and tangerines is very obvious, but there is common confusion in common sayings. For example, tangerines are also called tangerines, and tangerines are also called tangerines.

"Oranges turn into tangerines" is an old idiom. "Yanzi Spring and Autumn Annals" explains: "Oranges turn into tangerines when they grow in Huainan, and they turn into tangerines when they grow in northern Huainan. The leaves are similar. In fact, the taste is different, so the reason is that the water and soil are different. "Orange tastes sweet, and tangerine tastes sour and bitter. Due to the difference in water and soil, oranges grown in Huainan will turn into tangerines in Huaibei. It is a metaphor that due to the influence of the environment, people's habits will also change. From good to bad. Citrus aurantium, also known as wolfberry, is commonly known as stinky orange. It has little pulp and sour taste. Both orange and tangerine belong to the Rutaceae family, but they are different species. Orange will not turn into tangerine. The ancients did not observe it carefully, which led to misunderstanding.

Su Dongpo, a poet of the Song Dynasty in China and one of the Eight Great Masters of the Tang and Song Dynasties, mentioned in "A Gift to Liu Jingwen": "You must remember the good times of the year, the best ones are orange and orange."

Remarks

1. People with poor gastrointestinal function may easily develop gastric fecal stones if they eat too many oranges;

2. Oranges contain more calories If you eat too much at one time, you will "get angry" and promote stomatitis, periodontitis and other diseases;

3. Excessive consumption of citrus fruits will cause "orange disease" and skin problems. Symptoms such as yellowing.

Nutrition of Oranges Oranges are a high-calorie and low-fat fruit, containing 0.7 grams of protein, 0.6 grams of fat, and 57 calories per 100 grams.

Oranges have high nutritional value and are rich in protein, organic acids, vitamins, calcium, phosphorus, magnesium, sodium and other essential elements for the human body, which are unmatched by other fruits. Oranges not only have high nutritional value, but also have the effects of strengthening the stomach, moistening the lungs, nourishing the blood, clearing the intestines, and facilitating bowel movements. They can promote wound healing and have a good auxiliary effect on septicemia. In addition, because oranges contain the physiologically active substance dermaside, it can reduce the viscosity of blood and reduce the formation of thrombus, so it also has a good preventive effect on cerebrovascular diseases, such as cerebral thrombosis, stroke, etc. Orange pulp is an ideal food for diabetics because it contains ingredients similar to insulin. Traditional Chinese medicine also believes that oranges are sweet and sour, cold in nature, and have the effects of regulating qi and reducing phlegm, moistening the lungs and clearing the intestines, nourishing blood and strengthening the spleen. Regulate qi and disperse stagnation.

50 calories in oranges. Do not drink milk 1 hour before or after eating oranges, because the protein in milk will coagulate when encountering fruit acid, affecting digestion and absorption. It is not advisable to eat too many oranges. After eating, you should brush your teeth and rinse your mouth in time to avoid harm to your oral teeth.

[Edit this paragraph] Planting of oranges

Citrus fruit trees are mycorrhizal plants, which generally have no root hairs. Mycorrhizae grow with citrus trees, absorb nutrients from the tree, and Helps the tree absorb water, nutrients and secrete hormones and enzymes to promote the life activities of the citrus tree.

Citrus buds are naked buds, without scales, only bracts. Because the branch tips have the habit of "self-pruning", there are no terminal buds, only side buds. Citrus buds are compound buds. The buds that grow in the leaf axils are called axillary buds. There can be 2 to 4 buds in one leaf axil. Citrus can sprout multiple times a year, and the buds are divided into leaf buds and flower buds.

Citrus flowers are mixed flowers. After germination, they have branches, leaves, flowers and other organs. There are two types of flowers: single flowers and inflorescences: red tangerines, Wenzhou mandarins, etc. are single flowers, sweet oranges, lemons, grapes, etc. In addition to single flowers, pomelo also has inflorescences, and pomelo is dominated by inflorescences. Citrus usually requires pollination and fertilization before bearing fruit, but Wenzhou mandarin oranges, navel oranges, etc. can bear fruit without fertilization. This is parthenocarpy, also known as parthenocarpy.

The period from when the ovary swells after flowers fade to when the fruit is fully grown is called the fruit growth and development period. There are two physiological fruit drops during this period: those with fruit stems falling off are called the first physiological fruit drop; those falling off from the honey plate are called the second physiological fruit drop. The fruit drop that stops the second physiological fruit drop and ends before harvesting is called preharvest fruit drop.

The growth, development, flowering and fruiting of citrus fruit trees are closely related to environmental conditions such as temperature, sunshine, water (humidity), soil, wind, altitude, topography and slope aspect. These conditions have the greatest impact on temperature. Even a difference of 0.5°C in temperature can sometimes produce completely different results. The growth and development of citrus requires a temperature of 12.5 to 37°C. Flower bud differentiation in autumn requires day and night temperatures of about 20°C and 10°C respectively, and the soil temperature for root growth is roughly the same as that of the aboveground part. If the temperature is too low, the citrus will be frozen. Sweet oranges will be frozen at -4℃. Wenzhou satsuma mandarins will freeze their branches and leaves at -5℃. Sweet oranges will be frozen below -5℃. Wenzhou satsuma mandarins will be frostbitten below -6℃. Sweet oranges - Below 6.5℃, Wenzhou mandarin oranges below -9℃ will freeze the plants 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°C, the fruit and root systems stop growing. The effect of temperature on fruit quality is also obvious: within a certain temperature range, usually as the temperature increases, 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 it still needs good sunshine to achieve high quality and high yield. Generally, it can grow normally in areas with 1200 to 2200 hours of sunshine per year. For example, compared with the citrus-producing areas of Chongqing, which has less sunshine and less sunshine, South China, which has good sunshine and rich calories, has high sugar content, low acid content and high sugar-acid ratio. Generally, tropical and subtropical areas with annual rainfall of about 1,000 mm are suitable for citrus cultivation, but irrigation is often required due to uneven annual rainfall distribution. The relative moisture content of the soil is 60% to 80%. If it is below 60%, irrigation is required. Too much rain will cause water accumulation in the soil or high groundwater levels. Citrus orchards with poor drainage will cause the root system to die. Citrus fruit trees require a relative air humidity of about 75%.

Citrus can grow in a wide range of soils, including purple soil, red and yellow soil, beaches and tidal flats, with a pH value of 4.5 to 8, with a pH value of 5.5 to 6.5 being the most suitable. The growth of citrus root systems requires high oxygen content. Soil with loose texture, good structure, 2% to 3% organic matter content and good drainage is most suitable.

There are many methods for propagating citrus seedlings, including seeding, layering, cutting and grafting. At present, the grafting method is still the best and most common. Grafted citrus seedlings are composed of scions and rootstocks. Commonly used rootstocks There are tangerine, sour orange, red orange, wolfberry orange, cranberry, fragrant orange, local early morning and sour pomelo. ① Citrus aurantium, used as the main rootstock of sweet oranges and satsuma mandarins. Resistant to cold, drought, barrenness, foot rot, gum disease, and nematodes, it can dwarf the crown, produce early fruit, produce high and stable yields, and improve quality. Citrus aurantium is not resistant to cracking skin disease, moisture, and salt-alkali. ② Red tangerine is used as the rootstock of tangerines and sweet oranges. It has a well-developed root system and the tree will be more upright after grafting. The fruit will be 2 to 3 years later than that of tangerine rootstock. However, it has a high yield when it enters the fruiting stage and is resistant to cracking skin disease. ③Sour orange is resistant to waterlogging and wind, has a well-developed root system, and is resistant to foot rot. It is an excellent rootstock for banana tangerines and ponkans in southern subtropical regions such as Guangdong and Guangxi.

Citrus diseases include fungal diseases such as foot rot, gum disease, resin disease, scab, anthracnose, scab, yellow spot, powdery mildew, sooty disease, damping off, etc.; bacteria Sexual diseases such as canker; nematode diseases such as root nematodes and root-knot nematodes; physiological diseases such as oil spot, fruit cracking, and sunburn; viruses, viroids, and diseases of unknown etiology: Huanglongbing, schizophrenia, and recession diseases, Wenzhou mandarin wilt disease, bacterial wilt and citrus yellowing disease, etc. Pests that harm citrus include insects, mites and other harmful animals. There are more than 350 known species, mainly mites, scales, whiteflies, aphids, beetles, girdworms, leaf miners, leaf rollers, suckers, etc. Fruit flies, fruit flies and gall midges, etc.

[Edit this paragraph] Origin of oranges

Oranges originate in China, mainly from the middle and lower reaches of the Yangtze River and the areas south of the Yangtze River. Thousands of years of cultivation history certainly cannot tell the exact location. After being spread throughout Eurasia by the Arabs, oranges are still known as "Chinese apples" in the Netherlands and Germany. my country is one of the important origins of citrus, with abundant citrus resources and a wide range of fine varieties, with a cultivation history of more than 4,000 years. According to research, it was not until 1471 AD that tangerines, mandarins, oranges and other citrus fruit trees were introduced from my country to Lisbon, Portugal, and only in 1665 AD were introduced to Florida in the United States.

Citrus in the world is mainly distributed in the area south of 35° north latitude. It likes warmth and moisture. Areas with large water bodies that increase temperature can push north to 45° north latitude. There are 135 countries in the world that produce citrus, with an annual output of 102.822 million tons and an area of ??107.3 million acres, ranking first among all fruits. Brazil ranks first in production, with 24.2526 million tons, followed by the United States with 16.3352 million tons, and China. Third, 10.78 million tons, followed by Mexico, Spain, Iran, India, Italy and other countries.

Citrus in my country is distributed between 16° and 37° north latitude, with the highest altitude reaching 2,600 meters (Batang, Sichuan), starting from Sanya City in Hainan Province in the south, to Shaanxi, Gansu, and Henan in the north, and from Taiwan in the east Province, west to the Brahmaputra River Valley in Tibet. However, the economic cultivation areas of citrus in my country are mainly concentrated between 20° and 33° north latitude, at an altitude of 700 to 1,000 meters below sea level. There are 19 provinces (municipalities and autonomous regions) producing citrus nationwide, including Taiwan Province. Among them, 10 provinces (cities and districts) mainly produce citrus, including Zhejiang, Fujian, Hunan, Sichuan, Guangxi, Hubei, Guangdong, Jiangxi, Chongqing and Taiwan, followed by Shanghai, Guizhou, Yunnan, Jiangsu and other provinces (cities). It is also grown in Shaanxi, Henan, Hainan, Anhui and Gansu provinces. There are 985 counties (cities, districts) that grow citrus across the country.

[Edit this paragraph] Oranges you need every day

In a study conducted by Canadian researchers, the total cholesterol (TC) of 16 adult men and 9 adult women and low-density lipoprotein cholesterol (LDL-C) levels were higher than normal. Drink 1 cup (250ml), 2 cups, and 3 cups of orange juice every day for 4 weeks. The results showed that drinking 1, 2, and 3 cups of orange juice a day can increase plasma vitamin C levels by 2.1 times, 3.1 times, and 3.8 times after 4 weeks; drinking 3 cups of orange juice a day can increase high-density vitamin C levels after 4 weeks. Lipoprotein cholesterol (HDL-C) levels increased by 21%, folate levels increased by 18%, and the LDL/HDL ratio decreased by 16%. HDL can remove cholesterol from arterial walls and prevent atherosclerosis. Research shows that drinking 750ml of orange juice every day can effectively improve blood lipid metabolism in patients with hypercholesterolemia and is beneficial to cardiovascular health.

[Edit this paragraph] The significance of orange cultivation

Citrus fruits are rich in nutrients, have excellent color and aroma, and can be eaten fresh or processed into various processes, mainly juice. products. Citrus production ranks first among all fruits, and citrus juice accounts for 3/4 of the juice, which is widely favored by consumers. According to analysis by the Central Institute of Health, every 100 grams of edible part of citrus contains 0.05 mg of riboflavin, 0.3 mg of niacin, 16 mg of ascorbic acid (vitamin C), 0.9 g of protein, 0.1 g of fat, 12 g of sugar, and crude 0.2 grams of fiber, 0.4 grams of inorganic salts, 26 mg of calcium, 15 mg of phosphorus, 0.2 mg of iron, and 221.9 joules of calories. The carotene (provitamin A) content in oranges is second only to apricots 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] Benefits of eating oranges

Traditional Chinese medicine believes that oranges have the medicinal effects of moistening the lungs, relieving coughs, resolving phlegm, strengthening the spleen, smoothing the qi, and quenching thirst. They are the best choice for men and women. It is an excellent fruit for both young and old (especially the elderly, patients with acute and chronic bronchitis and cardiovascular disease). It can be said that oranges are treasures all over the body: not only the pulp has high medicinal value, but its skin, core, collaterals and leaves are all "authentic medicinal materials".

Orange peel is used as medicine, called "tangerine peel". It has the effects of regulating qi and drying dampness, resolving phlegm and relieving cough, strengthening the spleen and stomach. It is often used to prevent and treat chest and flank pain, hernia, breast bloating, breast agglomeration, stomach pain, and food accumulation. Its core is called "orange core", which has the effect of dispersing stagnation and relieving pain. It is commonly used clinically to treat testicular swelling and pain, mastitis and swelling and pain. Juluo, the network of meridians on the orange pulp, has the effect of clearing meridians and resolving phlegm, smoothing Qi and activating blood circulation. It is often used to treat phlegm stagnation and cough. Because tangerine is rich in vitamin P, it can effectively prevent and treat high blood pressure. It is good for the elderly to eat more. Orange leaves have the effects of soothing the liver, regulating qi, reducing swelling and dispersing toxins, and are an important medicine for treating hypochondriac pain and breast pain. The white inner layer of the orange peel is scraped off, and the epidermis is left alone, which is called "orange red". It has the functions of regulating lung qi and eliminating phlegm. It is often used clinically to treat coughs, hiccups and other diseases.

Oranges are rich in sugars (glucose, fructose, sucrose), vitamins, malic acid, citric acid, protein, fat, dietary fiber and a variety of minerals. According to an Australian scientific and industrial research institute A new study shows that eating an orange a day can prevent people from certain cancers (such as oral cancer, throat cancer and stomach cancer).

[Edit this paragraph] Disadvantages of eating oranges

Although oranges have many benefits, they should be eaten regularly rather than in excess. Traditional Chinese medicine believes that oranges are warm in nature, and eating too much can easily cause internal heat, which may lead to symptoms such as sores on the mouth and tongue, dry mouth, dry and painful throat, and constipation. Because orange pulp contains a certain amount of organic acid, in order to avoid irritation to the gastric mucosa and cause discomfort, it is best to eat oranges on an empty stomach. In addition, oranges also contain a large amount of carotene. If you eat too much at one time or take too much continuously in the near future, high carotene concentration in the blood will cause the skin to turn yellow. At this time, in addition to drinking more water and not eating orange fruits for the time being, you should also limit the intake of foods rich in carotene. After one month, the skin color will return to normal.

[Edit this paragraph] Oranges and Medicine

The World Health Organization proposed in the report "Diet, Nutrition and the Prevention of Chronic Diseases" that citrus fruits can effectively prevent cardiovascular diseases. occurrence. Folic acid in citrus fruits can reduce plasma homocysteine, which can damage arteries and is a risk factor for cardiovascular disease. Citrus fruits are rich in potassium, which helps regulate blood pressure and maintain normal heart rhythm. Vitamin C, carotenoids and flavonoids all have anti-lipid oxidation effects and can prevent the occurrence and development of atherosclerosis.

Australia’s Commonwealth Scientific and Industrial Research Organization reviewed and analyzed 48 studies on citrus fruits and diseases and found that eating one piece of fruit (non-citrus) a day can reduce the risk of stroke by 4%. Eating one tangerine fruit a day can reduce the risk of stroke by 19%. This fully demonstrates that citrus fruits have extraordinary cardiovascular protective effects.

You can eat oranges regularly, but don’t eat too much. It is recommended to eat 1-3 oranges every day. Eating too much at one 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 making rice porridge,

before the porridge is boiled, add a few hours A piece of clean orange peel, after the porridge is cooked, is not only aromatic and delicious but also appetizing. It can play a dietary treatment role for people with fullness in the chest and abdomen or cough with phlegm.

Orange peel soup: When making broth or ribs soup, put a few pieces of orange peel. Not only will the soup taste delicious, but it will also have a light orange flavor, which will make people eat it without feeling greasy.

Orange peel tea: Cut the cleaned orange peel into shreds, dices or pieces. You can brew it with boiling water alone or drink it with tea. It not only tastes fragrant, but also has appetizing, ventilating, and Refreshing effect.

Orange peel wine: Soak an appropriate amount of washed and dried orange peels in white wine, and you can drink it after about 20 days. Orange wine has the effect of clearing the lungs and reducing phlegm. If the soaking time is slightly longer, the wine will taste better.

Orange peel vegetables: After eating oranges, collect the fresh orange peels, clean them, soak them in water for 2 days, then cut them into thin strips, and then marinate them with sugar for 20 days. Very delicious snack. Not only does it taste sweet and refreshing, but it also has the effect of relieving hangover.

Orange peel dices: Remove the stems and rotten parts of fresh orange peels, wash them with clean water, drain them and cut them into small dices with a knife, then soak them in honey or sugar. Pickled for 20 days, it can be used as fillings for sugar buns, glutinous rice balls and other sweet foods. It tastes refreshing and sweet.

Five-spice orange peel: Soak clean orange peels in water for a day and night, remove the stems, heads and moldy parts, squeeze them dry, put them in a boiling water pot and boil them for 30-40 minutes, then squeeze out the water and drain. Dry it, and then cut it into 1 cm square pieces. Add 500 grams of wet orange peel to 20 grams of salt and boil it in a pot for 30 minutes. After taking it out, sprinkle a layer of licorice powder on it while it is wet. Use licorice powder for every 500 grams. About 15 grams of powder, after drying, it becomes sweet, fragrant, sour, salty and slightly bitter five-spice tangerine peel. It has a long-lasting taste and has medicinal properties.

Orange peel jam: Orange peels can be used to make jam, either dried or fresh. First wash the orange peel with water, put it into a pot and add water and boil it for a few minutes. Pour out the water, add new water and boil it for a few minutes. Repeat this 3-4 times until the bitterness of the orange peel water is not too strong. Then squeeze the orange peel dry with your hands or a cloth, and chop the orange peel into fine pieces with a knife. The more chopped the better, it would be better if you can use a meat grinder to grind it finely. Put the chopped orange peel back into the pot, add an appropriate amount of brown sugar, white sugar and saccharin according to the amount of orange peel, and add a little water. After boiling, simmer over low heat until it becomes a thick paste. The orange peel jam is ready.

Su Shi once wrote in a poem: "You must remember the good times of the year, the most beautiful ones are when they are orange and green." Although modern people are confused about oranges and tangerines, both oranges and tangerines are rich in nutritional value. Oranges contain vitamin C, calcium, fiber, a small amount of protein, fat, and rich glucose, fructose, sucrose, malic acid, citric acid, citric acid, carotene, thiamine, riboflavin, niacin, ascorbic acid, etc. Can lower cholesterol and prevent coronary heart disease and arteriosclerosis. The nutritional value of oranges is also very high. In addition to water, the pulp of oranges mainly contains vitamin C, malic acid, succinic acid, sugars, pectin, etc. It can appetize, quench thirst, help digestion, and prevent constipation.

Citrus is a native plant in my country and has a long history of cultivation, nearly 4,000 years ago. There are many varieties, including: early tangerine, milk tangerine, water tangerine, Bao tangerine, warm tangerine, kumquat, sand tangerine, tangerine, tangerine, etc. In our country, oranges also represent "good luck" and "reunion". In many places, it is customary to eat oranges when getting married or building a new house, which means that you will have a baby early. In ancient times, it was very common to use orange as place names: Xiaoxiang had Juxiang, Dongting had Juli, Pengze had Jushi, Changsha had Juzizhou, etc.

Orange can be said to be a treasure throughout the body, and its pulp, skin, core, and collaterals can all be used as medicine. The outer peel of the orange is called "tangerine peel" after being dried (it is called tangerine peel because of its good medicinal effect when used as a medicine). The white mesh-like silk on the orange pulp is called "orange network", which contains a certain amount of vitamin P and has the functions of unblocking collaterals, resolving phlegm, regulating qi, and eliminating stagnation. Orange core is bitter in taste, non-toxic, has the effect of regulating qi and relieving pain, and can be used to treat hernia, low back pain and other diseases. Even orange roots and leaves can be used as medicine, with different functions such as soothing the liver, strengthening the spleen, and harmonizing the stomach. The pulp of citrus is also an important raw material for light industry. It can be processed into cans, preserves, jams, fruit cakes, peptones, fructose, and can also be made into juice, fruit wine and other beverages. During the processing, pectin, citric acid, hesperidin, and essential oils can be extracted, and orange peel can be used as a raw material for extracting vitamin A, vitamin P, and vitamin C. Orange peel also has many clever uses in daily life. It can beautify and skin care, clean rusty porcelain, deodorize, and can also be used as fertilizer.

However, although oranges are good, don’t be greedy!

1. Eating too many oranges can cause stones

Oranges have high water content and are rich in nutrients. They contain a large amount of vitamin C, citric acid, glucose and more than ten kinds of nutrients. Proper consumption can replenish the body, especially for patients with chronic hepatitis and hypertension. Eating more mandarins can improve liver detoxification, accelerate cholesterol conversion, and prevent arteriosclerosis. Moderate consumption can increase appetite, but improper consumption will be unhelpful.

2. Children, especially, should not eat more oranges

Oranges are rich in carotene. If eaten in large amounts, about 500 grams a day for two months, hypercaroteneemia may occur. Symptoms include yellowing of the skin on the hands and soles, which gradually spreads throughout the body, and may be accompanied by symptoms such as nausea, vomiting, loss of appetite, and general weakness. It is sometimes easily confused with hepatitis.

Carotene is converted into vitamin A in the liver. However, a large amount of carotene cannot be converted in time in the liver of children, and is deposited throughout the body with the blood, causing adverse reactions to the body.

Some children who eat too many oranges will develop what Chinese medicine calls "excessive heat" symptoms, such as glossitis, periodontitis, pharyngitis, etc. Therefore, we believe that children should not eat more oranges. If you eat a lot, you should stop eating for 1 to 2 weeks before eating again.

You should pay attention to the following points when eating oranges:

1. Control the amount of food consumed.

According to research, eating 3 oranges a day can meet a person's daily need for vitamin C. If you eat too much, excessive intake of vitamin C will increase the amount of oxalic acid metabolized in the body, which can easily cause urinary stones and kidney stones.

2. Oranges and radishes should not be eaten together.

In recent years, scientists have discovered through a large number of clinical observations that after ingestion of radish and other cruciferous vegetables into the human body, they can quickly produce a substance called thiocyanate, and quickly metabolize it to produce a Antithyroid substance - thiocyanate. The amount of this substance produced is directly proportional to the amount consumed. At this time, if you consume fruits containing a large amount of plant pigments, such as oranges, pears, apples, grapes, etc., the flavonoids in them will be decomposed by bacteria in the intestines, which can strengthen the effect of thiocyanate on inhibiting the thyroid gland, leading to goiter. .

Therefore, experts remind people that after eating radish and other cruciferous vegetables, it is not advisable to eat oranges, apples, grapes and other fruits immediately. So you should be careful when eating these foods!

3. Oranges and milk should not be eaten together.

The protein in milk easily reacts with the fruit acid and vitamin C in oranges and solidifies into lumps, which not only affects digestion and absorption, but also causes symptoms such as abdominal distension, abdominal pain, and diarrhea.

In addition, elderly people with weak gastrointestinal, kidney, and lung functions should not eat too much to avoid causing abdominal pain, soreness and weakness in the waist and knees and other symptoms.

Pregnant women should not eat more than 3 citrus fruits a day, and the total weight should be within 250 grams.

[Edit this paragraph] Tips for eating oranges

Tips for making sour oranges sweet

Winter is the season when oranges taste best. However, sometimes you encounter sour oranges. At this time, there is a way to turn sour oranges into sweet oranges. The method is super simple, just put the oranges in the basket of your bicycle and drive around. After you come back, try the oranges in the basket again, ah, it's incredible. Somehow the sour oranges turned into sweet oranges. In winter, people generally like to stay at home and push their bicycles around, which can relieve their lack of exercise. Moreover, eating oranges can get vitamin C, which is really good for both beauty and health. Must try it.

Put the orange in the basket of the bicycle and drive around the neighborhood. Why do oranges become sweet? Will oranges really become sweeter after using this method? After testing the composition of the oranges, you can find that the sugar content of sour oranges is 11.6. After using this method, the sugar content is still 11.6. But when you eat it, you will notice the sweetness. In fact, the change in sweetness is related to the difference in acidity contained in oranges. Oranges contain both sugar that produces sweetness and acid that produces sourness. Acid is easily impacted, so it will decrease after being impacted. In other words, because the acid is reduced, it feels 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 bike basket, the acid is impacted and so reduced. If you give the orange a shock like this, the orange will become very sweet, but I don't agree with giving it too much shock. A level of impact like a bicycle basket is most suitable.

[Edit this paragraph] Three taboos of oranges