Litchi is rich in nutrition. According to the analysis, every 100 ml of fruit juice contains vitamin c13.20 ~ 710.72 g, and soluble solids 12.9 ~ 2 1%, so it is a nutritional product for improving health. According to Compendium of Materia Medica, litchi can "quench thirst, benefit people's color ..., soothe the nerves and improve intelligence, invigorate qi (nourish the brain and strengthen the body), treat scrofula and tumors ..." and other diseases.
Litchi is planted in today's China, Guangdong, Guangxi, Hainan, Fujian, Sichuan, Yunnan and Taiwan Province provinces, ranging from 18 degrees north latitude to 28 degrees north latitude. Litchi is also cultivated in many countries outside China. Most countries in Southeast Asia, such as Vietnam and Thailand, have recently produced litchi. On the other side of the globe, Florida and California in the United States and Queensland in Australia have also introduced litchi seed cutting.
At present, there are more than 100 litchi varieties in China, and there are more than 60 varieties in Guangzhou alone. The quality of cinnamon glutinous rice paste is the best. Guiwei is attractive for its crisp and sweet meat, while glutinous rice paste is famous for its small core, thick meat and rich juice. In the past, it was called "Three Unique Litchi" together with "Bicun Glutinous Rice Paste", "Luogang Guiwei" and "Zengcheng Gualv". Among the three outstanding figures, "Zengcheng Guaqing" is the most precious and has been listed as a tribute by the court. "Zengcheng hangs green" red has a green shell, four points are slightly green, and six dividends are paid. Every litchi is surrounded by a green line. The pulp is white and crystal clear, sweet and refreshing, and has a unique flavor. The hanging green tree, which lives in the hanging green garden in Licheng Town, Zengcheng, is the ancestor of hanging green litchi, with a tree age of more than 400 years and a height of more than 5 meters. Several generations of Gualv descendants have been successfully cultivated, and more than 65,438+000 plants have been planted in several towns and villages in Zengcheng.
Litchi that does not keep fresh has the characteristics of "one day changing color, two days changing fragrance, three days changing flavor, and four days without fragrance". The preservation of litchi is relatively difficult. It is said that Ming Chengzu sent litchi from Lingnan (also known as Sichuan) to Chang 'an in the Tang Dynasty, which made Yang Guifei laugh. In order to preserve the color and fragrance of litchi, he had to cut down the whole litchi tree and send it by express mail. The common modern preservation method is to choose varieties that are easy to preserve, and preserve them at low temperature and high humidity (2-4 degrees Celsius, 90%-95% humidity). The modified atmosphere is also used to reduce the proportion of oxygen to slow down oxidation; Or cooperate with drugs for sterilization and antisepsis.
Fresh litchi is on the market every Friday, and July to August is the best time to make it. Fresh litchi just picked can often be bought in cities near the place of origin. As for places far from the place of origin, you can only buy frozen ones. Canned lychee is also very popular. Generally, the shell and core are removed and soaked in light sugar water. There is no difference between taste and freshness.
The sugar content of litchi pulp is as high as 20%; Every 100 ml of fruit juice contains up to 70 mg of vitamin C, in addition to protein, fat, phosphorus, calcium and iron.
But litchi is very angry, and some people will have a bad mouth or nosebleed if they eat too much. There is a saying in Guangdong that "one litchi has three fires". People who are angry with themselves will react after eating a dozen. The popular folk solution is to drink a proper amount of bitter salt water or honey water.
Litchi is very common in literary works.
Du Mu, a poet in the late Tang Dynasty, wrote such a poem: "Chang 'an looks back at the embroidered pile, and the top of the mountain opens a thousand doors." When I was riding the world of mortals and laughing, no one knew it was litchi. "It's about that Emperor Tang Ming sent litchi thousands of miles away to win a smile from Yang Guifei.
Bai Juyi's Preface to Litchi in the Middle Tang Dynasty "Litchi was born under the dam, and the tree was like a curtain. Leaves like laurel and holly; Hua Ruju, Chun Rong; True as Dan, mature in summer. Flowers are like grapes, seeds are like loquat, shells are like red silkworms, membranes are like purple silkworms, meat is like Bai Rubing snow, and pulp is as sweet as fermented cheese. Roughly the same, in fact, more than it. Leaving this branch, the color changed one day, the fragrance changed two days, and the taste changed three days. After four or five days, the color, fragrance and taste are gone. ……"
Su Dongpo was banished to Lingnan during Zong Shaosheng's reign in Song Zhe, and he ate litchi for the first time in Shaosheng's second year. Later, litchi was mentioned many times in his poems, among which "300 litchi a day, I grew up as a Lingnan person without hesitation" is the most famous, which also shows his love for litchi. Banana banana, one of the four famous fruits in Lingnan, is a large perennial evergreen herbaceous fruit tree of Musaceae. Each banana bears more than ten combs, and each comb has 10- 15 fruits. Its pulp is soft, sweet and delicious, with unique aroma, and it has the functions of moistening intestine, relaxing bowels, lowering blood pressure and preventing arteriosclerosis. Bananas in Wanqingsha, Panyu are produced on sandy soil, and their fruits are rich in fragrance.
From the perspective of nutrition, banana is a kind of beneficial fruit rich in starch, but from the perspective of traditional Chinese medicine, banana is sweet and cold, which can clear away heat and moisten intestines and promote gastrointestinal peristalsis, but it is not suitable for people with spleen deficiency and diarrhea. There is always a reasonable explanation for everything. Bananas are cold. According to the principle of "heat is cool", it is most suitable for people who are hot and dry. People with hemorrhoid bleeding and people with hot and restless fetus can eat raw banana meat.
But it is precisely because bananas are cold that people who are prone to deficiency and cold had better avoid them. For example, people with stomach cold (light mouth and bloating), deficiency cold (diarrhea and dizziness), nephritis (also deficiency cold) and swollen feet during pregnancy, it is best not to eat bananas raw. Banana meat can't be eaten unless it is cooked, and its coolness is reduced. As for colds and coughs, bananas are not edible, but it is acceptable to steam bananas before eating.
The folk prescription is more effective to treat chronic cough with banana stewed rock sugar; Cook wine with bananas as a diet. Modern medicine believes that banana can cure hypertension, because it is rich in potassium, which can balance the adverse effects of sodium and promote the growth of cells and tissues. Banana can be used to treat constipation because it can promote gastrointestinal peristalsis. Most interestingly, German researchers said that bananas can cure depression and emotional anxiety because they can promote the secretion of endorphins in the brain.
In short, people who are hot and dry can eat a banana a day, but if they are afraid of bananas catching cold, they can choose to eat banana (which has stronger laxative power) and imperial bananas.
Bananas are "ordinary people" in tropical fruits. They are cheap, sweet and delicious, and they are "regular customers" in people's fruit bowls. On the playground, especially in some "time-consuming" sports competitions, such as tennis competitions, players are sometimes seen peeling bananas to eat during breaks. The main purpose of eating bananas during exercise is to make up for the rapid loss of energy in the body. Nutritionists say that football and tennis players like to eat bananas before the game, which helps them improvise. From the point of view of nutrition, banana sugar can be quickly converted into glucose, which is immediately absorbed by the human body and is a rapid energy source. Bananas are high-potassium foods, and potassium ions can enhance muscle strength and endurance, so they are especially loved by athletes.
Bananas are also effective for people who suffer from insomnia or emotional stress, because protein contained in bananas contains amino acids, which has a calming effect. So eating bananas before going to bed can have some calming effects.
Bananas have high nutritional value, but not everyone is suitable to eat them. Nutritionists say that bananas are high in potassium, and people with acute and chronic nephritis and renal insufficiency are not suitable to eat more. It is suggested that these patients should limit themselves to eating half a banana if they eat bananas every day. In addition, the sugar content of bananas is high, and a banana contains about 120 calories (equivalent to half a bowl of white rice). People with diabetes must also pay more attention to not taking too much.
Chinese medicine says that bananas are cold and sweet, and their nutritional value has long been recorded in ancient books. Their effects include clearing away heat and toxic materials, relaxing bowels, moistening lung and relieving cough, lowering blood pressure and nourishing. They are all high-quality fruits, which are really cheap and good.
However, people with cold bananas, stomachache and spleen and stomach deficiency should eat less. Guo Jia, Lingnan-Papaya, the scientific name of the four famous fruits in Lingnan, also known as papaya, is known as the "king of fruits in Lingnan".
Originally from Mexico, it was introduced to China in the17th century, and now it is cultivated all over Guangdong, especially in the suburbs of Guangzhou.
Papaya is an evergreen cork tree of Caricaceae. The better varieties produced in Guangzhou are Lingnan species, Zhongsui red, Thai red meat and so on. Lingnan species have the best quality. Its fruit shape is long, round and full, with thick meat and few seeds, and it has the fragrance of osmanthus. Papaya fruit is huge, the fruit weighs one or two kilograms, and the big one can reach six or seven kilograms. Its fruit is fresh, tender and delicious, and rich in nutrition; Can also be stewed, papaya stewed with rock sugar can clear the heart and moisten the lungs, and treat laryngitis and other diseases; Immature papaya can be eaten with sugar as vegetable soup or pickled into "salty and sour papaya".
Papaya has the function of strengthening the spleen and promoting digestion. Papain in papaya can break down fat into fatty acids. Papaya contains an enzyme, which can digest protein and is beneficial to the digestion and absorption of food, so it has the function of invigorating the spleen and promoting digestion. If you eat too much meat, fat will easily accumulate in the lower body. Enzymes in papaya can help decompose meat, reduce the workload of gastrointestinal tract, and gradually make fleshy legs more bony. Its unique papaya has anti-tumor effect, can prevent the synthesis of human carcinogen ammonium nitrite, and has strong anti-cancer activity on lymphoblastic leukemia cells. The oleander component contained in papaya is a compound with liver protection, enzyme reduction, anti-inflammatory, bacteriostatic, blood lipid lowering and blood vessel softening effects. Papain is very helpful to the development of mammary gland and has the function of promoting lactation. Women who lack milk can increase milk. Breast enhancement green papaya has the best effect. Because papaya is warm, cold and not dry, its nutrients are easily absorbed directly by the skin, especially for moistening the lungs. When the lungs are properly moistened, it is feasible to replenish qi and promote blood circulation, so that the body can absorb enough nutrition in the later stage, thus making the skin smooth, tender, delicate, wrinkle-free and ruddy. A good fruit in Lingnan-pineapple, one of the four famous fruits in Lingnan, was originally named pineapple, which originated in Brazil and was introduced to China in the16th century, with more than 70 varieties.
Pineapple is a perennial evergreen herb of pineapple family, with only one fruit in the center of each plant. Its fruit is cylindrical and is a compound fruit, which consists of many ovaries and floral axis. Pineapple peel has many flower organs (commonly known as fruit eye or pineapple chicken), which is hard and tricky. It must be peeled and dug up before eating.
Pineapple has three fruiting periods in a year, and the quality is the best when it matures from June to August. Fresh food should be bright in color, straight in shape, solid and medium-ripe. There are three common varieties of pineapple: Shenwan, Bali and Sarawak, and the "sugar-heart pineapple" carefully cultivated by Guangzhou fruit farmers in recent years is the best.
Pineapple is sweet, slightly sour and slightly cold. Has the effects of clearing away heat, relieving summer-heat, promoting salivation, quenching thirst and inducing diuresis. Can be used for treating summer heat injury, body heat, polydipsia, abdominal distension, dyspepsia, dysuria, dizziness, etc. And in fruit juice, there is an enzyme similar to gastric juice, which can decompose protein and help digestion.
Delicious pineapple, this fruit can not only lose weight, but also have different effects on health.
Lose weight-pineapple contains almost all the vitamins needed by human body, 16 kinds of natural minerals, and can effectively help digestion and absorption. The secret of pineapple weight loss lies in its rich juice, which can effectively hydrolyze fat. It can be used to effectively eat pineapple in food or drink pineapple juice in food every day, but avoiding excessive or untreated raw pineapple is easy to reduce the taste and stimulate the oral mucosa. Second, it is easy to produce bromelain, and people who are allergic to this protease will have symptoms such as itchy skin. The way to avoid this situation is simple: peel the pineapple, slice or dice it, soak it in light salt water for half an hour, then rinse it with cold boiled water to remove the salty taste, and then you can enjoy the fresh and delicious pineapple with confidence.
Clean your stomach-do you often worry about the meat content? Pineapple can help you solve your digestion and absorption concerns. Bromelain can effectively decompose protein in food and increase gastrointestinal peristalsis. Friends who are often constipated can try a folk prescription: eat a fresh pineapple every morning. Rich in beauty vitamin B can effectively nourish the skin, prevent chapped skin, moisten the brightness of hair, and at the same time eliminate the tension of the body and enhance the immunity of the body; Practice: Its pulp can be used as a mask and is the sweetest care product. Drinking its fresh juice regularly can eliminate senile plaque and reduce the incidence of senile plaque.
Health care-promoting blood circulation, lowering blood pressure, diluting blood fat, eating pineapple can prevent fat deposition.
Get rid of a cold-fever, cough and sore throat are the most obvious symptoms of a cold. In addition to resting quietly in bed, you might as well drink a cup of fresh pineapple juice, which has the effect of cooling down and effectively reducing bronchial inflammation. According to medical research, since ancient times, human beings often rely on bromelain contained in pineapples to relieve the symptoms of sore throat and cough.
Pineapple is rich in nutrients, including sugar, protein, fat, vitamins A, B2, C, protein catabolic enzyme, calcium, phosphorus, iron, organic acids, nicotinic acid and so on. Especially vitamin C, according to expert research, protein-decomposing enzyme contained in pineapple can decompose protein and help digestion, so it is a very suitable fruit for modern people who eat too much meat and greasy food for a long time. In addition, the attractive fragrance of pineapple comes from butyric acid in its components, which can stimulate saliva secretion and promote appetite.
Pineapple is a delicate fruit, which can be eaten in many ways. No matter how you eat it, it is delicious. Besides fresh food, it can also be made into canned food, fruit juice, candied fruit, dehydrated food, salty food and so on. Its stem can also be used as feed or extracted components to make liver-protecting drugs. Those who like to drink a glass can brew their own pineapple wine, as long as they use discarded pineapple skins. After brewing pineapple wine, the remaining peel can be reused to make pineapple vinegar, which fully plays the role of making the best use of it. The aroma and sour taste of pineapple can promote appetite and eliminate fatigue. The discarded pineapple peel can be used as a deodorant in the refrigerator to eliminate the odor, and the effect is quite good.