The nutritional value of eggs and food taboos

Eggs are rich in protein and play a positive role in human health. The protein is initially hydrolyzed by the digestive enzymes of the gastric juice and completes the entire digestion and absorption process in the small intestine. Absorption of amino acids through the small intestine mucous membrane cells is carried out by an active system that transports neutral, acidic, and basic amino acids to proteins that are digested and absorbed in the intestine, not only from food but also from the loss of intestinal mucosal cells and the secretion of digestive juices. Every day, about 70g of protein enters the digestive system, most of which are digested and reabsorbed. Unabsorbed protein is excreted from the feces.

protein

The protein volume accounts for approximately 57%-58.5% of the whole egg. Protein contains about 12% of protein, mainly ovalbumin. The protein also contains a certain amount of riboflavin, niacin, biotin and calcium, phosphorus, iron and other substances.

The protein is also concentrated protein, dilute protein.

Concentrated protein: Part of the protein near the yolk, higher concentrations. Dilute protein: Part of the protein near the eggshell, the concentration of dilute.

yolk

Egg yolk volume of about 30% to 32% of whole eggs, the main composition of the substance is phosvitin, and the fat content is 28.2%, fat is mostly lecithin in the phospholipids. For human nutrition, egg yolk is rich in vitamin A and vitamin D, and contains high levels of iron, phosphorus, sulfur, and calcium.

Eggs are one of the best sources of human nutrition. Eggs contain a lot of vitamins and minerals and proteins with high biological value. For humans, eggs have the best protein quality, second only to breast milk. An egg contains the same amount of heat as half an apple or half a cup of milk, but it also has 8% of phosphorus, 4% of zinc, 4% of iron, 12.6% of protein, 6% of vitamin D. , 3% of vitamin E, 6% of vitamin A, 2% of vitamin B, 5% of vitamin B2. 4% of vitamin B6. These nutrients are essential for the human body. They play an extremely important role, such as repairing human tissue, forming new tissues, consuming energy, and participating in complex metabolic processes.

According to the analysis, each gram of eggs contains 12.8 grams of protein, mainly egg albumin and ovoglobulin, which contains 8 amino acids necessary for the human body, and is very similar to the composition of human proteins. The body's absorption rate of egg proteins can be as high as 98%. . Every hundred grams of eggs contains 11-15 grams of fat, mainly concentrated in the egg yolk, but also easily digested and absorbed by the body, egg yolk is rich in lecithin, sterols, lecithin and calcium, phosphorus, iron, vitamin A, vitamins D and B vitamins. These ingredients are of great benefit to the function of the nervous system. Therefore, eggs are good brain foods.

Egg yolk contains more cholesterol, which can be as high as 1510 mg per 100 grams. Therefore, many people, especially the elderly, are wary of eating eggs, and fear that eating eggs will increase cholesterol and lead to atherosclerosis. In recent years, scientists have found that although eggs contain more cholesterol, they are also rich in lecithin. When lecithin enters the bloodstream, cholesterol and fat particles become smaller and remain in suspension, preventing the deposition of cholesterol and fat on the blood vessel walls. Therefore, scientists believe that for the elderly with normal cholesterol, eat 2 eggs a day, the highest increase in cholesterol in 100 ml of blood cholesterol, will not cause hardening of the arteries. However, they should not eat too much and eat too much, which is unfavorable to the digestion of the stomach and intestines, causing waste and increasing the burden on the liver and kidneys. It is advisable to eat 1 or 2 eggs per person per day, which is beneficial to digestion and absorption and meets the needs of the body.

Eggs are ideal natural foods for humans. They should also pay attention to science when they eat. For the elderly, eating eggs should be cooked, lying, steamed, dumped as well, because fried, fried, fried, although delicious, but more difficult to digest. If the eggs are processed into salted eggs, the calcium content will increase significantly, from 55 mg per 100 g to 512 mg, which is approximately 10 times that of fresh eggs, and is particularly suitable for consumption by middle-aged and elderly people with osteoporosis. It should also be reminded that eating raw eggs is not accepted, and some people think that eating raw eggs is good for nutrition. This view is unscientific.

1. Eggs are rich in protein, fat, vitamins and minerals needed by humans such as iron, calcium, and potassium. Proteins are high-quality proteins and have a repairing effect on liver tissue damage.

2. It is rich in DHA, lecithin, and yolk, which is beneficial to nervous system and body development, can improve brain function, improve memory, and promote hepatocyte regeneration;

3. Eggs contain more vitamin B and other trace elements that can decompose and oxidize carcinogens in the human body and have anti-cancer effects.

Eggs are sweet, flat, spleen, stomach, can nourishing the lungs, nourishing yin and moistening, used for lack of blood, fever, polydipsia, fetal movement disturbed, etc., is the common food to support righteousness. Can Yin and blood, in addition to restlessness, spleen and stomach. For the reduction of blood deficiency due to blood deficiency, or dizziness, night blindness; after the illness physically weak, malnutrition; lack of Yin and blood, insomnia, irritability, palpitations; lung and stomach Yinxie, aphonia, sore throat or vomiting and so on. Eat a lot, fried, fried, steamed, boiled, washed or boiled eggs can be. In addition to single use, it can also be applied. Such as lack of Yin and blood, insomnia heart palpitations, can be used Rehmanniae, asparagus, lily 12g, decoction juice, rushed into the eggs and mix well. Yin deficiency, aphonia, sore throat can be blunt with crystal sugar.

Eggs contain protein, containing eight kinds of essential amino acids; fat contains a large amount of lecithin, triglycerides, cholesterol and lecithin; minerals are iron, phosphorus, calcium, etc.; vitamin A, B2. B6. D, E and smoke Acid and so on. Has a higher nutritional value and a certain degree of medical efficacy.

Precautions

Eat eggs must be cooked, do not eat raw, be sure to prevent eggs contaminated with bacteria on the shell. Infants and young children, the elderly, and patients who eat eggs should be boiled, lying, steamed, and dumped as well. Hairy eggs and stinky eggs cannot be eaten. People with coronary heart disease should not eat too much eggs. Children should not exceed 2 for the elderly, and no more than 3 for the elderly. For people with hypercholesterolemia, especially severe patients, they should eat as little or as little as possible, or You can take protein instead of yolk, because the cholesterol in egg yolk is three times higher than that of protein and can reach 1,400 milligrams per hundred grams.

People with kidney disease should eat eggs carefully.

Eggs are commonly eaten by people. Many people know that its nutritional value is high, but they ignore the dietary restrictions on eating eggs. In the daily diet, eggs, white sugar, and rabbit meat are the most common myths. In many places there is a habit of eating sugared eggs. In fact, egg and sugar cook together, will make egg protein amino acids to form fructosyl lysine conjugates. This substance is not easily absorbed by the body and can have adverse effects on health. There is also a dietary taboo for eggs, which cannot be eaten with rabbit meat. "Compendium of Materia Medica," said: "Eggs and meat flew into rabbits." Rabbit meat is cold, sour and cold, eggs are slightly flat and cold, both contain some biologically active substances, the total food will react and stimulate the gastrointestinal tract, Cause diarrhea.

Do not drink tea immediately after eating eggs

Some people, after eating high-protein foods such as meat, eggs, and seafood, are accustomed to drinking tea immediately to help “deodorize” and “digest”. In fact, this practice is unscientific. Because tea contains a large amount of tannic acid, tannic acid and protein synthesis have astringent tannic acid protein, so that the peristalsis slows, thereby prolonging the residence time of the feces in the intestine, not only easy to cause constipation, but also increase the toxic substances and carcinogens The possibility of being absorbed by the body is harmful to human health.

Tips for life: Avoid eating raw eggs

Egg albumen contains avidin, which affects the absorption of biotin in foods and causes the body to suffer from loss of appetite, general weakness, muscle aches, skin irritation, and the removal of eyebrows. Eggs contain antitrypsin, which affects the body's digestion and absorption of egg proteins. These two substances in unripened eggs are not decomposed, thus affecting the digestion and absorption of proteins.

Eggs carry bacteria during the process of formation. Unripe eggs cannot kill bacteria and cause diarrhea. Therefore, eggs should be eaten after high temperatures and do not eat unripe eggs.

The protein structure of raw eggs is compact, and most of them cannot be absorbed by the body. Only the cooked proteins become soft and the human gastrointestinal tract can digest and absorb. Raw eggs have a special odor, which can cause central nervous system inhibition and reduce the secretion of saliva, gastric juice, and intestinal fluids, leading to loss of appetite and indigestion.