1, common mistakes in eating fruit
1, avoid eating fruit immediately after meals.
Eating fruit immediately after a meal will not help digestion, but will cause flatulence and constipation. Therefore, it is advisable to eat fruit 2 hours after meals or 1 hour before meals.
2. Don't rinse your mouth when eating fruit.
Some fruits contain a variety of fermented sugars, which are very corrosive to teeth. If you don't rinse your mouth after eating, fruit residues in your mouth can easily cause dental caries.
3. Avoid eating too much fruit.
Excessive consumption of fruit will lead to copper deficiency in human body, increase cholesterol in blood and cause coronary heart disease. Therefore, it is not advisable to eat too much fruit in a short time.
4, eating fruit is unsanitary
Eating rotten fruits, as well as fruits without dust-proof and fly-proof equipment and incomplete cleaning and disinfection, such as strawberries, mulberries and watermelon slices, are prone to digestive tract infectious diseases such as dysentery, typhoid fever and acute gastroenteritis.
5. Fruits should not be disinfected with alcohol.
Although alcohol can kill bacteria on the surface of fruit, it will change the color, fragrance and taste of fruit. Alcohol and acids in fruits will reduce the nutritional value of fruits.
6. Avoid peeling raw fruits.
Some people think that the vitamin content in the peel is higher than that in the pulp, so when eating fruit, eat it with the skin. As we all know, when fruit is damaged by diseases and insect pests, pesticides are often sprayed, which will soak and remain in the wax of the peel, so the pesticide residue in the peel is much higher than that in the pulp.
7. Don't cut fruit with a kitchen knife.
Because the kitchen knife often comes into contact with meat, fish and vegetables, it will bring parasites or parasite eggs to fruits and make people infected with parasitic diseases. In particular, the rust on the kitchen knife and the tannic acid contained in the apple will react chemically, which will make the color, fragrance and taste of the apple worse.
Most fruits are cold and should be eaten in the afternoon.
Some people are used to eating fruit when they get up. In fact, most fruits are cold foods, and eating them just after getting up will stimulate the stomach. It is best to eat fruit at three or four in the afternoon, which is conducive to the absorption and utilization of nutrients.
9. The risk of exotic fruits is not lower than that of native fruits.
Many consumers think that "foreign fruit" is safer. In fact, the fruit quality and safety mechanism in China is relatively sound. Overseas fruits need to use more preservatives and preservatives in fresh-keeping storage, which is relatively more dangerous than local fruits.
10, don't blindly pursue the appearance of fruit.
Many people think that fruits with bright colors and complete size are good fruits, which may fall into the trap of illegal traders forging their appearance by illegal means.
1 1. Fruits with high calorie cannot replace vegetables.
Both fruits and vegetables are indispensable and cannot replace each other. Although they are all plants, their ingredients are not the same. Some minerals in vegetables are not found in fruits. If you only eat fruit, you will lack nutrients such as folic acid. Moreover, fruit has calories, and eating too much fruit may lead to obesity, especially for diabetics. Eating too much fruit is not good; In addition, eating too little vegetables and lacking cellulose may cause constipation. Fruits are mainly raw and contain a lot of water.
12, synthetic VC can't replace fruit.
Compared with synthetic vitamin C, natural vitamin C existing in fruits and vegetables has an advantage that cannot be ignored, that is, vitamin C existing in many fruits and vegetables exists in the form of a combination of two substances, namely vitamin C and vitamin P. In human tissues, vitamin P can help vitamin C to play its role. Synthetic vitamin C is a pure pharmaceutical preparation, and its effect is far less than that of natural vitamin C. In addition, vitamin C tablets are often used in large quantities. If they are used for a long time, they can generate a large amount of oxalic acid in the body and become the material basis of kidney calculi. However, vitamin C in fruits and vegetables will not make oxalic acid in urine too high.
13, obese people don't eat a lot of fruit.
Eat only fruits, and beware of diseases such as hyperglycemia or hyperlipidemia that obese people are prone to. Because the fruit itself is rich in sugar, if you eat too much sugary food and exercise less, you will have high blood sugar or blood lipids. At this point, pregnant women should pay special attention to patients with obesity, diabetes, hyperlipidemia and fatty liver who only eat fruit meals to lose weight.
14, fruit is not suitable for juicing.
Nowadays, more and more families have bought juicers and found that drinking fresh juice is delicious and convenient. However, nutrition experts remind that except for people with bad teeth, it is best not to juice fruits, but to eat them directly is more nutritious.
Because drinking fruit juice will reduce people's intake of cellulose rich in fruits. These celluloses have the health care functions of preventing and reducing diabetes and cardiovascular diseases, and can also effectively stimulate gastrointestinal peristalsis and promote defecation.
In addition, eating fruit directly is easy to produce satiety, while drinking fruit juice will unconsciously absorb too much calories and sugar, increasing the chance of getting sick.
15. Buy less cut fruits.
Fruit is the main source of vitamin C. Vitamin C is easily oxidized in the air, and it will be lost due to high temperature and sunshine. However, the nutrients of fresh fruits peeled and cut in advance may be reduced. The British Consumers Association made a study to test the vitamin C content of pre-packaged cut fruits and vegetables sold in supermarkets. It was found that in 13 samples, the vitamin C content of 4 samples was half lower than that recorded in the reference book.
16, cut fruit is easily contaminated by bacteria if it is not handled properly.
The surface of fruit is easily contaminated by pollutants, chemicals, animal waste or salmonella. If fresh fruit is not disinfected, there may be salmonella on the surface of the fruit. However, when cutting fresh fruit without cleaning with a knife, the bacteria in the contaminated fruit skin will spread to the edible part through the knife. If the cut fruit is stored at room temperature for too long, bacteria will breed.
17, fruits will produce toxic substances after freezing.
Nutrition experts remind that fruits are more likely to produce nitrite after freezing, and eating too much nitrite can lead to headache, dizziness, nausea and vomiting.
It is very important for customers to learn to distinguish whether fruits are frozen or not. After oranges and oranges are frozen, the oil in the epidermis penetrates into the pulp, and the pulp is easy to be bitter. The frozen surface of fruit is generally black.
18, eating immature bananas will lead to increased constipation.
Bananas are rich in dietary fiber, a large part of which will not be digested and absorbed, but can increase the volume of feces and promote intestinal peristalsis.
At the same time, the sugar content of banana is above 15%, and it contains a lot of water-soluble plant fiber, which can cause hyperosmotic gastrointestinal fluid secretion, thus absorbing water to solid parts, making feces soft and easy to discharge. But these effects are only available to mature bananas, and immature bananas may have the opposite effect. It contains more tannic acid, is relatively insoluble, has astringent effect on digestive tract, and inhibits the secretion and peristalsis of gastrointestinal fluid. If you eat too much, it will cause constipation or aggravate constipation.
19, eating mango requires anti-allergy.
Mango contains a lot of fruit acids, amino acids, protein and so on. These substances contain a lot of irritating substances, which will cause allergies when contacting with human skin, and in severe cases, redness and pain will occur. But not everyone is allergic to mango. Even if they are allergic, their reactions are different. Some people will react on the same day, and some people will have symptoms in two or three days.
20. Oranges turn yellow when eaten too much.
Oranges contain carotene. Due to the intake of citrus (more than1~ 2kg per day) or carrots in a short period of time, the liver can't metabolize carotene into vitamin A in time, so that the content of carotene in the blood suddenly increases, leading to yellow pigmentation in the skin and tissues, resulting in carotene anemia and yellow skin.
2. Nutritional value of common fruits
banana
Eating bananas can help people who are weak and sentimental to dispel pessimism and irritability and maintain a peaceful and happy mood. This is mainly because it can increase the content of serotonin in the brain. The content of 5- hydroxytryptamine in the brain of patients with depression is less than that of ordinary people.
Banana: cool, can lower blood pressure and reduce fire. People who are afraid of cold, weak and have a weak stomach are not suitable for eating bananas. Because bananas digest slowly in the gastrointestinal tract, it is not good for the gallbladder.
2. Pierce
Pear is a kind of fruit (fruit food) full of vigor and vitality. It is rich in water, vitamins A, B, C, D, E and trace element (trace element food) iodine, which can maintain the healthy state of cells and tissues, help organs to detoxify and purify, soften blood vessels, and promote blood to transport more calcium (calcium food) to bones. But when eating pears, you must chew slowly to better absorb them.
Pears are rich in vitamins and water. However, if the nature is cold, eating too much will hurt yang, yang deficiency, cold limbs, weak lower abdomen and stomach, and pregnant women should not eat more or had better not eat.
3. Apple
Eating a small amount of apples every day can prevent many diseases, and eating apples regularly can prevent cancer, because it is rich in phytochemical natural antioxidants that can effectively scavenge free radicals and reduce the incidence of cancer (cancer food). Apples are rich in fiber, which can reduce the incidence of heart disease and lose weight. In addition, it also has the effects of nourishing the heart and moistening the lungs, promoting the production of body fluid and removing toxic substances, invigorating qi and regulating the stomach, sobering up and calming the liver. However, because fructose and fruit acid are more, they have a strong corrosive effect on teeth, so it is best to rinse your mouth and brush your teeth in time after eating.
4. Lemon
Lemon contains "flavonoids", which can kill a variety of pathogenic bacteria, and is rich in citric acid and lemon oil (oily food) essence, which is helpful to increase the enzyme content in the liver, accelerate the decomposition of carcinogenic chemicals, remove impurities and toxins accumulated in the liver, and has a good weight loss effect.
5.durian
Rich in protein and lipids, it has a good nourishing effect on the body and is a good source of nutrition for fruits. Durian has a special smell, and different people feel different. Some people think it stinks like cat shit, others think it smells good. This smell of durian has the function of appetizing and promoting appetite, and the dietary fiber can also promote intestinal peristalsis.
water caltrop
Known as "good fruit in winter and spring", it is rich in vitamins and water, rich in nutrition, sweet and refreshing, and has the effects of clearing away heat and promoting fluid production, resolving phlegm and relieving sore throat.
7.sugar cane
Sugar is very rich and easy to be absorbed and utilized by the human body. In addition, it also contains a large number of trace elements necessary for human body, such as iron, calcium, phosphorus, manganese and zinc, among which the iron content is particularly high. Rich in fiber, chewing repeatedly is like brushing your teeth with a toothbrush. Because sugarcane is cold, it is not suitable for people with spleen and stomach deficiency and cold pain in the stomach.
8.oranges
Sweet and sour, cool. Regulate qi and moisten lung, sober up and stop dysentery. Oranges can eliminate dampness and phlegm, detoxify and relieve cough, and treat lumbago and mastitis. However, people who have "insufficient yin and excessive yang" should eat less to avoid "getting angry".