In summer, a variety of fruits will also be on the market in large quantities, and people will choose different fruits to eat according to their own taste needs. Generally speaking, there are certain methods to follow if they want to pass through fruits. Here is a brief introduction.
1. Fruits produce toxic substances when frozen
Nutritionists have warned that fruits are more likely to produce nitrite when frozen, while eating too much nitrite can cause headaches, dizziness, nausea, vomiting and other symptoms.
It's crucial for customers to learn to recognize whether the fruit is frozen or not. When oranges and oranges are frozen, the oil on the skin penetrates into the pulp, which is prone to bitter. The frozen surface of fruit is usually black.
2. Food that is not cooked will lead to aggravation
It is 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, banana contains more than 15% sugar and a large number of water-soluble plant fibers, which can cause the secretion of hypertonic gastrointestinal fluid, so as to absorb the water to the solid part, making the feces soft and easy to discharge. However, these effects are only possessed by ripe bananas. Those that are not ripe may have adverse effects. They contain more tannins, which are difficult to dissolve, and have astringent effects on the digestive tract. They can inhibit the secretion of gastrointestinal fluid and its peristalsis. If they are ingested too much, they will cause constipation or aggravate the disease.
3. Fat people don't eat a lot of fruit
Eat only fruit, be careful of the high blood sugar or blood lipid diseases that fat people are prone to get. Because the fruit itself is rich in sugar, if you eat too much sugar food and exercise less, you will have the problem of high blood sugar or blood lipid. This point, obesity, diabetes, hyperlipidemia and fatty liver patients, and only eat fruit meal mm, as well as pregnant women should pay special attention.
4. Synthetic VC can't replace fruit
Compared with the synthetic vitamin C, the natural vitamin C in fruits and vegetables has an advantage that can not be ignored. That is to say, the vitamin C in many fruits and vegetables exists in the state of combination of vitamin C and vitamin P. In human tissues, vitamin P can help vitamin C play a role. But the synthetic vitamin C is pure medicine preparation, its effect is far inferior to the natural vitamin C. In addition, vitamin C tablets are often used in large amounts, such as long-term use can generate a large amount of oxalic acid in the body, which becomes the material basis of kidney stones. Vitamin C in fruits and vegetables does not make oxalic acid in urine too high.
5. Fruit should not be juiced
Nowadays, more and more families buy Juicers, and they think it's delicious and convenient to drink fresh fruit juice. But nutrition expert reminds, besides tooth bad person, fruit had better not press juice to drink, eat more nutrition directly.
Because drinking water and juice will reduce people's intake of cellulose rich in fruit. These cellulose can prevent and reduce diabetes, cardiovascular disease and other health care effects, but also effectively stimulate gastrointestinal peristalsis, 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 risk of disease. 6. Cut fruit less
Fruits are the main source of vitamin C. vitamin C is easily oxidized in the air. High temperature and sunlight will make it lose. However, for fresh fruits that are peeled and cut in advance, the nutritional components may be reduced. A study conducted by the British consumer association tested the vitamin C content of prepackaged cut fruits and vegetables sold in supermarkets, and found that the vitamin C content of four of the 13 samples was half lower than that recorded in the reference books.
7. Improper handling of cut fruit is easy to be polluted by bacteria
Fruit surface is easily polluted by pollutants, chemicals, animal excretion or Salmonella. If the fresh fruit is not disinfected, there may be Salmonella on the surface of the fruit. When a knife is used to cut fresh fruit without cleaning, the bacteria in the outer skin of the contaminated fruit will be transmitted to the edible part through the knife. If the cut fruit is stored at room temperature for too long, bacteria will grow.
8. Eating mango should prevent allergy
Mango contains a large number of fruit acids, amino acids, proteins, etc. these substances contain more irritant substances. When they contact the skin of the human body, they will cause allergies. In serious cases, they will appear swelling and pain. But not everyone is allergic to mango, and even if they are allergic, their reactions are different. Some people react on the day they eat mango, while others will have symptoms in two or three days.
9. If you eat too many oranges, your whole body will turn yellow
Oranges contain carotene. Due to a large amount of intake of oranges (more than 1-2 Jin per day) or carrots in a short period of time, the liver can not metabolize carotene into vitamin A in time, which makes the content of carotene in the blood suddenly increase, resulting in yellow pigment deposition in the skin and tissues, thus causing carotenemia and skin yellowing.
Generally speaking, different fruits pay attention to different eating methods. Therefore, after describing the nine healthy ways of eating fruits mentioned in this article, when you taste fruits at ordinary times, you should pay more attention to the above nine points so as not to harm your health due to improper eating.