Eggs can be boiled on low heat and then switched to warm heat for 8 minutes

Three parts of hard boiled eggs

1. Wash the fresh eggs and put them in a pot of water for one minute, then boil them on low heat. This is to prevent the eggs from bursting their shells during the boiling process.

2, the eggs with low heat boil, and then switch to a warm fire can be cooked for 8 minutes. Do not boil too long, otherwise, the yolk of ferrous ions and sulfur ions will produce a chemical reaction, the formation of ferrous sulfide brown precipitate, thus impeding the body's absorption of iron.

3, hard-boiled eggs do not have to take out immediately, 1?2 minutes and then take out, or put in cool water, cold water to cool down for half a minute, so easy to peel. To prevent bacterial infection should not be put into the tap water.?

Eating guide

If an egg is cooked in boiling water for more than 10 minutes, a series of chemical changes will occur inside. The protein structure becomes tighter and less likely to come into contact with the protein-digesting enzymes in the gastric juices, so it is harder to digest. Egg protein contains more methionine, after a long time of heating, it will decompose sulfide, it reacts with the iron in the yolk to form iron sulfide that is not easily absorbed by the human body, and the loss of nutrients is more.

Boiled eggs are more harmful. Raw eggs are not only contaminated with salmonella, but also have two harmful substances, anti-enzyme protein and anti-biotin protein. The former will affect the digestion and absorption of protein; the latter can be combined with biotin in food, leading to a lack of human biotin, resulting in mental fatigue, muscle pain and other symptoms. And once the eggs are cooked, the above two substances will be destroyed.

Reference Baidu Encyclopedia - Boiled Eggs ? Practice ? Eating Guide