Why do egg whites stick to the shell after boiling?

This indicates that the eggs are very fresh, and the freshly laid eggs will be like this for 1-3 days. 1. The egg white sticks to the eggshell, which is difficult to peel off, and the onion will peel off, commonly known as "skin protection", indicating that the egg is very fresh. 2. The egg whites of the new eggs are delicate and have not yet formed a gelatinous body, and the egg whites will be torn layer by layer.

Aged eggs, on the other hand, have firmer egg whites and are difficult to come out of the layer. Therefore, new eggs are easier to stick, and old eggs are easy to peel off when they are well formed. 3. The phoenix clothes between the eggshell and the egg white of the new egg are thin and crispy, and they will break and break off when touched, which cannot play the role of isolating the protein and the eggshell.

After a few days, the phoenix coat will become thicker and more flexible.

If you increase the height, there will be no sticking shells. 4. The air chamber of the freshly laid eggs is relatively small, and the moisture of the eggs is relatively large. Use thermal expansion and cold contraction.

The principle explains that the space for the growth and contraction of new eggs is small, and the shell is tightly combined with phoenix clothes and egg whites, so it is easy to stick. 5. When the egg is not cooked, it will stick to the eggshell, and the egg white will be tightened after cooking, and the eggshell and egg white will naturally separate. In addition, put the boiled eggs while they are hot.

If you excite it in moderation, it will also be easy to peel off.

In this case, you have not handled it yourself, and it is best to put the eggs in cold water to cool them immediately after they are boiled, so that the egg whites will not stick to the eggshell.

After the egg is boiled, it should be put in cold water to excite, and the eggshell will not stick when it is separated.

It is best to cool the eggs immediately after they are boiled so that the egg whites do not stick to the eggshell.

Many people like to eat eggs, but when boiling eggs, there will be a problem of eggs sticking to the shell. The solution to this problem is actually very simple, usually using a pot under cold water and adding a little salt to the pot to cook eggs. Another easy way is to remove it after cooking it and soak it in cold water.

There are many more ways to do this, so let's take a look at them together.

1. Tips for boiling eggs.

The pace of modern life is getting faster and faster, and many people neglect to eat breakfast in order to catch up with work hours, but taking a little time to eat a boiled egg is also a good choice. First of all, we have to clean the eggs before boiling them to keep them clean and hygienic, and secondly, before boiling the eggs, soak the eggs in cold water, and then put them in a pot to boil over high heat, so that the eggs are not only not easy to break, but also less easy to stick when the glass shell is used. Another way is to boil the eggs in cold water, in this case, the temperature of the water and the eggshell will rise together, in which case the eggshell will not break easily and will not stick together.

2. How to peel an egg whole.

The fresher the eggs, the easier they are to cook and peel. In order to make hard-boiled eggs not easy to stick to the shell, there are not only methods and skills when cooking, but also certain methods and skills when peeling eggs. When we peel eggs, we can first put the freshly cooked eggs in cold water, let it fully contact with the cold water, put it into a glass, and then press the mouth of the cup with your hand, and then shake the glass up and down, left and right, so that the eggs can completely separate the eggshells in the impulsive collision with the glass.

I believe that many people are eager to try it after reading the above steps. Practice is the way to know, so are you ready to give it a try? I look forward to you having more and better ways to share it with you!

When boiling eggs, be sure to boil them in cold water, and then add an appropriate amount of salt to the water, to grasp the heat, to cook eggs over medium heat, and the time for boiling eggs should be controlled at about 8 minutes, so that the shell will not stick, because salt can make the eggs solidify, so it is not easy to stick to the shell.

Put the eggs in the pot when the water is cold, wait until the water boils, turn off the heat, wait for about 10-15 minutes, take it out, and then put the eggs in cold water so that the shell will not stick; The super-cold water of eggs is based on the principle of thermal expansion and cold contraction, so it will not stick to the shell.

You can pour a little salt into the boiled eggs, because the salt will ensure that the eggshell does not break, and the egg whites can be better coagulated, so it will not stick to the shell.

Protein sticky shell indicates that the protein is normal and the nutrition is good, which is a good phenomenon. If it is too sticky, it may be that the egg white concentration is too high, and if it is too fresh, it is possible, and the egg white of fresh eggs can be separated into three layers. If you find that there are many dents in the big head when you peel it, and the three layers of egg whites are no longer separated, and the yolk is not in the middle, it means that the egg is not very fresh.

It is recommended to add salt to the boiled egg water or wash the egg with cold water before boiling, if it is still sticky, the egg is too fresh, too tender, it is recommended to steam the egg custard or make poached eggs.

The reasons why eggs stick to their shells are as follows:

If the eggs are stored for a long time, some bacteria will grow in them, and the bacteria will destroy the protein structure of the eggs, and then cause the eggs to stick to the shell.

Fresh eggs, fresh eggs are well hydrated, and when cooked, the film on the shell will stick to the egg whites and will not be easy to peel.

Egg breakage, when the egg is bumped and cracked during transportation or storage, leads to the growth of bacteria, destroys nutrients, and causes the egg to stick to the shell.

Eggs that cannot be eaten.

Loose yellow eggs: due to violent oscillation such as transportation, the yolk membrane ruptures, resulting in mechanical yellowing; Or if it is stored for too long, bacteria or mold will invade the egg through the eggshell pores, and the protein structure will be damaged, resulting in yellowing and turbidity of the egg liquid. If the yellowing is not serious, there is no peculiar smell, and it can still be eaten after high temperature treatment such as decoction, but if the bacteria multiply in the egg, the protein has been denatured, and it cannot be eaten if it has a foul smell.

Rotten eggs: Because bacteria invade the eggs and multiply in large quantities, resulting in deterioration, the eggshell is dark gray, and even the eggshell is broken due to the expansion of internal hydrogen sulfide gas, and the mixture in the egg is gray-green or dark yellow, with a foul smell, then the egg cannot be eaten, otherwise it will cause bacterial food poisoning.

Cracked eggs: In the process of transportation, storage and packaging, due to vibration, extrusion and other reasons, some eggs will cause cracks and cracks, which are easy to be invaded by bacteria, and should not be eaten if they are placed for a long time.

Stillborn eggs: Eggs that stop developing due to bacterial or parasite contamination during incubation, as well as poor temperature and humidity conditions, are called stillborn eggs.

A way to judge good and bad.

Look at the appearance: to judge the quality of the egg, the most direct way is to observe the appearance of the egg, in general, a good egg shell has a layer of hoarfrost powder, the hand wipe is not very smooth, the shape is complete; The shell of a bad egg is smooth, dark, incomplete, and cracked.

Shake by hand: When buying eggs, you can use your thumb, index finger and middle finger to pinch the eggs and shake them, the ones that have no sound are fresh eggs, and the eggs that make a swaying sound when they are shaken by hand are the poor quality eggs.

Lighting method: Another method is to gently hold the egg with your hand and observe the light, generally good egg protein is clear and translucent; The bad eggs are gray and dark, the empty room is large, and some have stains.

At this time, it may be because the protein in the egg deteriorates and produces some sticky substances, so that the eggshell and egg white stick together, at this time, we need to soak the egg in cold water after boiling.

The egg whites stick to the shell, indicating that the boiled egg is very fresh, because the egg shell and the egg white inside are connected together, and the fresh egg is actually not easy to peel after boiling, you can add it to cold water and soak it for a while, relatively speaking, it is easy to peel.

In fact, it is because we need a certain amount of water vapor when we boil eggs, and then the boiled eggs can be put in clean water to prevent its egg whites from sticking to the shell.

First of all, before boiling the eggs, it is best to soak them in clean water for a period of time, and then put the eggs in the pot, add a little more water, and cook for a longer time, so that the eggshells of the eggs will be very easy to peel.

The fresher the eggs, the more difficult they are to peel.

The ease and difficulty of peeling boiled eggs is mainly closely related to the tightness of the inner membrane and the egg white, and its tightness depends on the nature of the protein.

Here are some tips for boiling eggs:

1. Soak the eggs in water before boiling them. In fact, before boiling eggs, soak the eggs in cold water for a while, and then put them in the pot to boil, so that the eggshell is not easy to break. At the same time, after the egg is soaked, it will not be so easy to get the shell, and it is very simple to peel the shell.

2. Boiled eggs in cold water. Because of the cold boiled egg, the water temperature rises together with the eggshell, and the eggshell is not easy to break, and it is not easy to stick to the shell. However, if it is boiled in hot water, the eggshell will crack due to uneven heat and cold, on the one hand, bacteria are easy to invade it, and the water enters the egg, affecting the taste.

3. Do not put hard-boiled eggs in cold water to cool. Some people are in a hurry to eat eggs after they are cooked, and they may be directly put in cold water to cool them, but this has a particularly great impact on the taste of eggs and the shell. Because there are very fine pores on the eggshell, putting it in cold water will allow cold water and microbial pores to enter the inside of the egg, and the cooked eggs will be contaminated, and the alternation of hot and cold will make it more troublesome to peel the shell.

Hard-boiled eggs should be cooled naturally. When boiling eggs, remember these 3 "tips"! The eggs will be fragrant and tender, and they will not stick to the shell.

1: When you open the hard-boiled egg, you can find the yolk in the middle. However, for undercooked eggs, the yolk is not in the middle.

Although the yolk is stabilized by the yolk frenulum, it also tends to suspend and cling to the eggshell. When the eggs sit for a longer period of time. The yolk frenulum weakens and the egg white becomes thinner.

When an egg that has been left for a long time is cooked, the yolk clings to the shell, which is also a sign of the age of the egg.

2: The larger the air chamber, the less fresh the eggs. (i.e. the empty part of the hard-boiled egg).

3: Fresh eggs are not easy to peel, eggs are easier to peel after 5 days, and eggs after 10 days can be easily peeled even if they are cooked without cold ice.

How to solve the problem that eggshells are not easy to peel?

When eggs are sluggish to not make money, I will boil a lot of tea eggs to eat by myself, and sometimes I will take them to sell, I also have a good experience in how to make boiled eggs good to peel the shell, those who teach you to add salt and vinegar when boiling are not a good way, that can only prevent the egg shell from breaking, it is useless to make the egg shell peel, after boiling it may be so useful to soak it in cold water, but it is also very useful for too fresh eggs, and if the eggs soaked in cold water are not eaten in time, it's going to break if it's very tolerant.

My method is very simple and effective, that is, it is best to pick eggs that have been stored for a period of time, because as the eggs become longer and longer, the water in the egg white is evaporated and becomes thicker, and its pH value will become higher and higher, and the adsorption force of the egg white and the egg membrane will become smaller and smaller.

You don't have to bother to distinguish which is fresh and which is stored for a period of time, my master also has a look at the time, the best way is to boil two to try it, and find that it is not good to peel the shell, just put it at room temperature for a week, so that it is easy to peel the shell when it is boiled again, if it is a hot weather in summer, it can be shortened to three or four days, do not worry that the eggs will deteriorate, as long as the eggs have not been washed with water, the protective film on the eggshell will protect the eggs from bacterial erosion.

One last word of caution

If you find that the eggs are not easy to peel, you must put the fresh eggs at room temperature and wait, do not put them directly in the refrigerator for refrigeration, because eggs are also living organisms, and the internal pH value should be changed through breathing precipitation, and low temperature refrigeration will inhibit this respiration, and the humidity in the refrigerator is large, which is not conducive to the evaporation of excess water of eggs.

Boiled egg sticky shell and whether it is fresh has little to do with it, mainly depends on the size of the air chamber and the smoothness of the raw egg shell, generally peeling eggs found that the egg white and eggshell connection part of the color is normal and there is no peculiar smell, are normal to eat, to prevent sticking to the shell, you can take out the egg immediately after boiling and put it in cold water to soak.

What is the cause of sticky eggs in the shell.

Eggs are a kind of food that we eat more often in our lives, there are many ways to make them, they can be steamed, boiled, marinated, fried, etc., among which the boiled eggs and tea eggs we eat are boiled, so that the cause of the eggs can be retained to the greatest extent, and the taste is also relatively fresh and tender.

However, sometimes when we eat boiled eggs, we will find that when it is peeled, the egg whites will stick to the eggshell, which is very difficult to peel, and sometimes it is wasteful even if it is peeled, but this situation has nothing to do with the freshness of the eggs, mainly depending on the size of the air chamber and the smoothness of the raw eggshell.

If we find that the color of the egg white and the eggshell connection part is normal when we peel the egg, and there is no peculiar smell, then it is a fresh egg, which will not affect the normal consumption, if you want to prevent sticking to the shell, then take out the egg immediately after boiling and soak it in cold water for a period of time, and then peel it.