What fruit should I eat in hot weather?

Nutritional immunologists believe that the nutritional value and medicinal value of each fruit are different. If you buy fruit to eat in summer, you can achieve nourishing effect. Peaches are high in iron. As the saying goes, "peaches support people, apricots hurt people." Is this sentence scientific from the perspective of nutritional immunology? According to experts in nutritional immunology, peaches are rich in vitamins, minerals and fruit acids, and the iron content ranks first among fruits. Iron is the main raw material for human hematopoiesis, which is quite beneficial to health. Peaches play an important role in many herbs. Apricot contains citric acid, malic acid and beta carotene, which is mainly used for relieving cough and asthma, moistening intestines and relaxing bowels. However, Compendium of Materia Medica records that "raw food hurts bones and muscles". Watermelon can clear away heat and relieve summer heat and induce diuresis. There is a proverb in our country: eat watermelon in summer, and you don't need to catch medicine. It shows that summer is the best time to eat watermelon. Watermelon is rich in vitamins A, B 1, B2, C, glucose, sucrose, malic acid, glutamic acid and arginine. It has the effects of clearing away heat and relieving summer-heat, inducing diuresis and lowering blood pressure, and has certain auxiliary effects on high fever and thirst, summer heat and sweating, nephritis, oliguria and hypertension. Although watermelon is good, Chinese medicine experts believe that watermelon is a cold food, which is easy to hurt the spleen and stomach. Therefore, people with spleen and stomach weakness, chronic enteritis, gastritis and duodenal ulcer or loose stool had better eat less. Normal people should not eat more, otherwise it will damage the spleen and stomach and cause indigestion or diarrhea. It should be reminded that patients who have a cold and fever in summer often use watermelon to replenish water and reduce fever, but because it is a sweet and cold food, it is not suitable for colds and early colds, especially for patients with symptoms such as chills and sweating. Limonene has anticancer effect. Citrus fruits can moisten the lungs and regulate qi. Fresh orange juice contains a variety of creatine and vitamins, which is helpful to human metabolism, whitening and has many health care effects. The white silk on the surface of orange pulp contains vitamin P, which can prevent and treat hypertension and has expectorant effect. There is a famous essential oil called limonene essential oil, which is the most important part of most oranges. At present, studies have pointed out that limonene has anti-cancer effect. Papaya can treat protein's digestive disorder. Papaya is not only a delicious fruit, but also has medical functions. Papaya contains an important digestive enzyme called papaya, which can decompose protein food into digestible state, which can dissolve up to 35 times of its own lean meat, which is why people use papaya to treat digestive disorders in protein. It has the highest content in the leaves of papaya trees and immature papaya skins. Enzymes in pineapple can also decompose vitamin C into protein per 100g of pineapple fruit, and the protein content is as high as 30mg, which is rich in water. Its pulp, like papaya, contains an enzyme that can decompose protein, so it can soften the meat and dissolve blood clots. Strawberry juice can relieve sunburn pain. Strawberry is rich in vitamins C, B, calcium, phosphorus and potassium, and it still occupies a place in plant medicine. Its leaves can be used as astringent after boiling, and can be used to treat diarrhea, fever, oral ulcer and gum disease. The antioxidant effect of grape seed is not only 20 times that of vitamin C, but also 50 times that of vitamin E. Grape seed contains a lot of OPC antioxidants, and OPC is a powerful flavonoid, which mainly exists in epidermis and seeds. Red grape seed, especially OPC, is an effective source and a potential key to increase the antioxidant activity of human body, which can protect immune oxidative damage and delay the aging process. Banana is one of the oldest fruits of mankind, with high nutritional value. Banana is the source of natural potassium, which can inhibit sodium that causes hypertension and cardiovascular diseases, maintain normal blood pressure and heart function, and is also rich in vitamin B6 and stress-resistant mineral magnesium, which can keep people away from depression. It is also the source of essential amino acid tryptophan. It works synergistically with vitamin B6, nicotinic acid and magnesium, and is the main raw material for human body to make serotonin, which has the functions of anti-depression, sedation and sleep. Apples can lower cholesterol and prevent gallstones. Apple not only contains protein, fat, carbohydrates, vitamins, minerals and malic acid, but also contains a valuable pectin component. Pectin is a soluble cellulose, which can promote gastrointestinal peristalsis, regulate the stomach and intestines, combine with cholesterol, help the human body excrete and lower cholesterol. Among them, pectin will also be discharged in combination with cholesterol in the gallbladder, which can dilute bile and prevent gallstones. In fact, summer is not conducive to the storage of fruits. It is best to buy it while it is fresh within 1 ~ 2 days. If the fruit you buy is ripe, put it in a ventilated and cool place without sunlight. Generally speaking, the suitable storage temperature of fruits is between 7 ~ 13℃, and some fruits need lower temperature, such as apples, grapes, peaches, plums and persimmons. The refrigerator is a good place to store them. Fruits refrigerated in the refrigerator can be packed in plastic bags or paper bags without washing first to prevent water evaporation. You can punch a few small holes in the plastic bag to keep it breathable and avoid fruit rot caused by water accumulation. Not every kind of fruit is suitable for keeping fresh in the refrigerator. Some fruits are naturally afraid of cold, such as bananas, mangoes and papayas. , is a native product of the tropics. Putting it in the refrigerator will make the peel produce spots or turn dark brown, and the quality and flavor of fruit will also be destroyed.