Boiled eggs are one of the common foods for many people at breakfast, but do you really cook eggs? Not only do you have to cook eggs for time, you have to pay more attention to other aspects. Today, Xiao Bian has taught you how to cook eggs.
Tips for cooking eggs
Do not boil eggs with boiling water. First of all, the boiling water will make the eggs roll around in the pot, it is easy to break the egg shell, and even the protein is exposed. Second, the coagulation and denaturation of proteins in eggs does not require very high temperatures, usually 60°C-87°C, and the boiling water temperature can reach 100°C. If boiled in boiling water, the protein may be as old as an eraser. Therefore, when cooking eggs, you should open the lid and allow the water to bubbling rather than boil.
Cook for a short time and cool after cooking. The protein is fully cooked and the egg yolks are completely solidified. The eggs need to be cooked for 10 minutes. However, if you want a soft boiled egg with egg yolks, it will take about 6 minutes. If the egg is cooked for too long, there will be an unpleasant smell of sulfur. Another thing to note is that when you take the eggs out of the pan, cool them with cool water immediately, otherwise the residual temperature will keep the eggs warm and grow old.
Chen's eggs are better peeled. We all feel that the freshest is good, but boiled eggs do not need to be too fresh. Because the eggs that are slightly older are better peeled. If you store eggs in the refrigerator for a few days, the pH will increase slightly, and the protein and the inner shell will loosen slightly.
It does not matter if the yolks turn green outside. If the egg is cooked too old, you will find that there is a layer of green outside the yolk. This is where the sulphides in the egg yolk react with iron without any harm. As long as the cooking time is not too long, you can avoid it.
So, what are the requirements for the time of boiled eggs?
How long does it take to cook an egg?
"3 minutes egg", mature and tender egg, egg yolk just cooked, slightly simmer. "5 minutes of egg", mature and tender egg white, cooked egg is not hard.
According to nutritionists, eggs that are boiled at different times have different digestion times in the human body. "3 minutes of eggs" is slightly cooked eggs, the most easy to digest, takes about 1 hour and 30 minutes; "5 minutes" eggs are half-cooked eggs, in the human body digestion time of about 2 hours; boiled eggs for too long, the human body to digest 3 hours and 15 minutes.
If the eggs are cooked in boiling water for more than 10 minutes, a series of chemical changes will occur inside. The protein structure becomes more compact and does not easily come in contact with protein digestive enzymes in gastric juice, so it is more difficult to digest. Egg protein contains more methionine, after prolonged heating, it will break down the sulfide, it reacts with the iron in the egg yolk to form iron sulfide that is not easily absorbed by the human body and has more nutrient loss.
Unfamiliar eggs are harmful. Raw eggs not only have Salmonella contamination problems, but also have two kinds of harmful enzymes and avidin. The former will affect the digestion and absorption of protein; the latter can be combined with biotin in food, resulting in the lack of human biotin, resulting in mental fatigue, muscle aches and other symptoms. Once the eggs are cooked, the above two substances will be destroyed.
Tetanus Vaccine,Hepatitis B Vaccine For Adults,Tetanus Booster,Td Vaccine
FOSHAN PHARMA CO., LTD. , https://www.foshanpharma.com