The former hinders the contact between protease in human stomach and protein, and affects the digestion and absorption of protein. The latter can combine with biotin in food to form substances that the human body cannot absorb. However, the above two harmful substances in raw eggs are destroyed once cooked, which no longer affects the absorption of nutrients by the human body. The protein structure of raw eggs is dense, and digestive enzymes in the gastrointestinal tract are difficult to contact, so it is not easy to be digested and absorbed. However, the structure of the cooked egg protein becomes soft and easy to be digested and absorbed by the human body. About10% of fresh eggs carry pathogenic bacteria, mold or parasitic eggs.
Some parents use boiled water to wash eggs and add sugar to their children. Because the germs and parasitic eggs in eggs can't be completely killed, diarrhea and parasitic diseases are easily caused. If there is salmonella in eggs, it will also cause food poisoning. Recently, it has been found that there may be 0-157 enterohemorrhagic Escherichia coli on the egg shell. Even if the amount of bacteria is very small, it is enough to cause food poisoning if eggs are laid.
Some people in the folk use raw eggs to treat constipation in children, which can not cure constipation, but also infect people and animals with Toxoplasma gondii. The onset of this disease is urgent, and almost all organs in the whole body are invaded by Toxoplasma gondii, causing lesions, and in severe cases, it will lead to death.
Therefore, eggs must be cooked and eaten, and it is best to eat steamed eggs. It is not advisable to wash eggs with boiling water, let alone. Why not eat raw eggs? Protein of eggs is rich in essential amino acids, and its composition ratio is suitable for human needs. Eggs are also a good source of vitamins and inorganic salts and a kind of food with high nutritional value.
Some people like to eat raw eggs. I think that the nutrients of eggs are destroyed after they are cooked, and I think that eating raw is better than eating cooked. In fact, this way of eating is not only useless but also harmful.
First, eggs are produced by the ovaries and cloaca of chickens, which have a high rate of bacteria, so the surface of eggshells and even egg yolks may have been contaminated by bacteria, which can easily cause parasitic diseases, intestinal diseases or food poisoning if eaten raw.
Second, raw eggs still have a fishy smell, which can inhibit the central nervous system, make people lose appetite, and sometimes make people vomit. Third, raw egg white contains a substance called avidin, which prevents the human body from absorbing biotin contained in egg yolk.
After the eggs are cooked, they can not only kill the bacteria inside and outside the eggs, but also destroy the anti-biotin. Therefore, it is not suitable for eggs to be eaten raw, which is harmful to health and turns the hair white. Some people excessively advocate natural foods, do not process or cook the food normally, and eat them directly or simply take them with boiling water.
Some people think that eating raw eggs in this way can get the most comprehensive nutrition. In fact, there are bacteria such as Salmonella in raw eggs, so eating raw eggs will be harmful to the human body, and eating raw eggs will make your hair turn white. There is a substance called biotin in the human body, which can make protein digested and absorbed in the body be hydroxylated and dehydrogenated, and it can be transformed into "oral introduction", "oral blossoming" and "unitary quince" to produce melanin. Raw egg protein contains avidin, which is easily absorbed by human body. Therefore, taking raw eggs often may lead to the decrease (or lack) of biotin, which may lead to the decrease of melanin production, while the lack of melanin will make hair lose color, so it is easy to cause hair to turn white for a long time.
Little knowledge:
At present, there are different opinions about whether stewed eggs with milk are healthy. It seems that this issue is still inconclusive. Most people tend to eat together, but eggs should not be cooked in milk, which may destroy their respective nutrients. Some nutrition experts believe that the elderly, children and other people with weak digestive function of the spleen and stomach can drink milk after eating eggs for half an hour, but the average person does not have to. Some experts also believe that milk can be eaten with eggs, because both are high-quality and high-protein foods, and eating together is conducive to strengthening physical fitness and recovery after illness, and suggests eating together with some staple foods to make better and more reasonable use of high-quality protein. Some people like to beat raw eggs with boiled milk, thinking that they can make up for it. In fact, because the temperature of milk is not high enough, the eggs are not fully cooked, so this way of eating is unhealthy. Raw eggs may contain pathogenic Salmonella, which requires a certain temperature to kill. Only by the temperature of milk, bacteria can not be completely killed, and it will cause gastroenteritis after eating. Raw eggs contain avidin, which will hinder the absorption of biotin in the intestine; The antitrypsin factor can also inhibit the activity of trypsin. Protein with raw eggs is not easy to absorb. Therefore, it is not necessary to wash eggs with milk, and eggs can only be eaten after they are cooked, so as to ensure nutrition and meet health requirements. Don't eat eggs with milk and soybean milk. Diet and nutrition Raw eggs contain avidin and antitrypsin, which will affect the absorption of biotin and the digestion of protein. In addition, raw eggs may contain Salmonella, and these harmful factors can be destroyed after boiling. In addition, heating itself can denature protein and make protein easy to digest, so you can't eat raw eggs. Soymilk and milk are easy to overflow after boiling, so if you use milk and soy milk to wash raw eggs, it is not easy to cook them, so don't wash them with milk and soy milk.