Under normal circumstances, the fat in the egg yolk is emulsified with protein. After salting, protein in egg yolk coagulates, denatures and precipitates out (called "salting out"), and is separated from lipid, thus hardening.

The temperature of boiled eggs is usually 60℃-87℃.

Salted egg yolk is a delicious food, the main raw materials are duck eggs, poultry eggs and so on. Salted egg yolk is rich in lecithin, unsaturated fatty acids, amino acids and other important nutrients needed by human life. However, cholesterol is a double-edged sword. Elevated cholesterol will affect arteries and easily lead to arteriosclerosis. Lack of cholesterol can also cause a series of health problems. It is enough for ordinary people to eat one or two egg yolks every day, and don't eat too much.

Extended data:

Nutritional value of salted duck eggs

1 amino acid

There is a large amount of protein in duck eggs, which will be decomposed into amino acids during curing. In addition, the salt in duck eggs increased due to salting, resulting in a slight increase in inorganic salts in eggs. After curing for a period of time, protein will denature and separate from the fat, and the fat in duck eggs will gather together to become egg butter.

2, rich in calcium

After salted duck eggs were cured, the content of protein in them would decrease obviously, from 65,438+04.7 grams per 100 grams of fresh eggs to 65,438+00.4 grams. At this time, the fat contained in it will increase obviously, from 1 1.6 grams per 100 grams of fresh eggs to 13. 1 gram. Moreover, the carbohydrate content in salted duck eggs also increased significantly, from 1.6 g per 100 g of fresh eggs to 10.7 g.

3. Inorganic salts

Salted duck eggs are not only rich in calcium, but also contain inorganic salts such as iron and phosphorus, and experts have found that the calcium quality and iron content in salted duck eggs are higher than those in eggs and fresh duck eggs. Therefore, their nutritional value is basically the same, and each has its own advantages. Proper consumption is harmless to the body, so it can be safely eaten in daily life.

Step 4 clear lung fire

Through research, it is found that various nutrients contained in salted duck eggs have good effects of nourishing yin, clearing away lung heat, strengthening muscles and caring skin, so they are very suitable for eating in summer. In addition, Chinese medicine believes that salted duck eggs can clear lung fire and reduce yin fire, which is better than salted egg butter in treating children's food retention, and external application can treat burns and eczema.

5. Duck eggs contain phospholipids, vitamin A, vitamin B2, vitamin B 1, vitamin D, calcium, potassium, iron, phosphorus and other nutrients.

6. The content of protein in duck eggs is the same as that in eggs, which has the function of strengthening the body;

7. The total amount of various minerals in duck eggs is much more than that in eggs, especially salted duck eggs are rich in iron and calcium urgently needed by human body, which is good for bone development and can prevent anemia;

8. Duck eggs contain more vitamin B2, which is one of the ideal foods to supplement B vitamins.

References:

People's Network-Does salted duck eggs have eight nutritional values? But 7 kinds of people are not suitable for eating.

People's Network-Don't boil eggs in boiling water? Four tricks for cooking tender and smooth eggs