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The newly laid egg has small voids and very little air, and its specific gravity is greater than that of water, so it will sink to the bottom. However, rotten eggs that have been left for a long time will produce a lot of gas in themAnd some of the water in the egg evaporates from the holes in the shell, so it loses weight and floats on the water.
Eggs spoil easily, and the easiest way to keep them fresh.
1. Bury the eggs in dry, clean tea residues, or tip down in a carton containing bran or wood chips, and then place them in a cool and dry place.
2. Wash the eggs and blanch them in hot water at about 60 degrees for 10 minutes, so that the outermost layer of egg whites will be heated and solidified to form a protective film to effectively prevent bacteria from invading.
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Fresh eggs will sink to the bottom of the water, and some bad eggs will float, which is related to the structure of the egg, its own metabolism and whether it is contaminated with microorganisms. 1. There is an air chamber on the big head of the egg, there are very small holes in the eggshell, and the egg yolk and egg white are good nutrients; 2. When the egg is placed for a long time, the water evaporation chamber becomes larger, and it will surface when the density becomes small enough; 3. When the egg itself or through the eggshell enters the microorganisms, the breeding and reproduction of the microorganisms consumes the nutrients of the eggs, and the water and gas produced by metabolism will be discharged from the eggshell, making the overall density of the eggs smaller and the eggs will float.
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Fresh eggs, which have quite little air in them, have a greater specific gravity than water, so they have to sink. But because the bad egg is left for a long time, on the one hand, its protein is corrupted, and a lot of gas is produced; On the other hand, part of the water in the egg has evaporated from the small holes of the eggshell, and the less water there is, it will be lighter, so it will float up.
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Usually good eggs are denser than water, so they sink underwater; The protein in the bad egg has long been decomposed into gas, and some of the gas runs out of the air, the mass of the egg becomes smaller, and the density becomes smaller than that of water when the volume remains the same, so the bad egg will float in the water.
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A large amount of gas produced by bacteria fills the shell, and proteins and other substances are broken down into water quality. The eggs will be half in the water and half in the air, and they will float outside.
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When a raw egg is bad, it is actually the yolk and egg white inside the egg that are eaten (decomposed) by certain organisms, and at the same time, a large amount of a toxic gas called hydrogen sulfide is produced in it, and it cannot be eaten. At this time, the egg is equivalent to an inflated balloon, so it will not sink in the water but will float on the surface. In fact, you should also be able to feel that good eggs are much lighter than bad eggs, and the reason for this is the above.
You should get the idea.
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Because the ingredients in the bad eggs have changed, the density has become smaller, so they float!
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Rotten eggs are light in weight and are buoyant by the buoyancy of water, so they float.
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This is because gas is produced when the proteins in the bad eggs break down.
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Because there is a chemical change.
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The memories of the purple memories above are pretty good, yes.
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Only hard-boiled eggs will sink.
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If the egg is left for too long, some of the moisture inside will be lost from the small holes in the eggshell, and the bacteria from the outside will also enter the inside of the eggshell and cause the egg to spoil. The gas inside the egg will also evaporate continuously. So put the bad egg in the water and it will float.
When we usually store eggs, we can put them in the refrigerator and try to avoid letting them come into contact with too much water, so that the eggs are not easy to deteriorate.
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Others float up in the water is spoiled, and the power of the egg in the water is about to deteriorate.
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No, eggs are placed in drier air for a long time, such as more than 1 month, the liquid in the egg will evaporate, and the light weight will lead to a smaller density, so it will float, but it is not necessarily broken, bad standards: egg white is seriously thinned, egg yolk dehydration is solid, color becomes black, smell smells. However, if it is only light in weight, the egg white concentration is not very thin, and the smell is normal, it can still be eaten, but it must be heated.
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No, the eggs mentioned in the book have less air in them, so they don't float.
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It's been put for a long time, it's not new, and it can only be used to embarrass people.
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Yes. If the raw egg floats in the water, it means that it is broken. Because the bad eggs are left for too long, on the one hand, the protein in it is rotten and will produce a lot of gas.
On the other hand, part of the water in the egg will evaporate from the small holes of the eggshell, and the gas will evaporate, and the weight of the egg will naturally become lighter, and the specific gravity will also decrease, so it will float on the surface of the water.
How to tell if raw eggs are good or bad.
1. First of all, we look at the appearance of the egg, if there is a layer of hoarfrost, and the surface of the egg is not very smooth when touched by hand, it is more black and astringent, which means that the egg is an old egg, not fresh.
2. Pinch the egg with your hand and shake it next to your ear, there is no sound of water is a fresh egg, on the contrary, there is a sound of water is a bad egg, and the louder the sound of water, the greater the degree of rot of the egg.
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The eggs are not fresh anymore.
Fresh eggs lie on the bottom of the water, and those that are more than 3 weeks old float in the water.
According to industry insiders, after the hard-boiled eggs are peeled, the public will find that there is an air chamber at the end of the egg. Generally, the older the "age" of the egg, the larger the air chamber, the more air in the egg, and the greater the buoyancy, so the more stale the egg, the more it will float on the water.
However, the storage time of the eggs does not necessarily indicate the freshness of the eggs, for example, a fresh egg from the same farm outside the island accidentally bumped into the bottom of the bowl during the experiment, causing a slight crack, after the bumps in the vehicle and the high temperature, by the time the experiment was done in the afternoon, the egg that should have sunk to the bottom became able to stand. It is foreseeable that if it is left for another day, it may be suspended in the water.
That is to say, the "blind selection" of the "boiled women" in the market, when they see the eggs "standing" in the water, they should mutter, this kind of eggs may be intact, just a little longer eggs, but it may also be "egg age" is not long, the freshness is discounted.
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If the egg is left in drier air for too long, for example, for more than a month, the liquid in the egg will evaporate, the weight will be reduced, the density will be reduced, and the egg will float. But that doesn't have to be broken. Criteria for eggs to go bad:
The egg white is severely thinned, the yolk is dehydrated and solid, the color turns black, and the smell becomes stinky. If it is only lightweight, the egg white concentration is not very thin, the smell is normal, and it is still edible, but it must be heated and cooked.
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In general, eggs sink to the bottom in water. If it floats on the water, the eggs are not fresh. It doesn't have to be broken. Eggs will float on the surface of the water even if they have a dry cough. You can open it and try it. If it's broken, don't eat it.
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Hello friend, if the egg floats in the water, it is not necessarily bad, the egg should be able to float in the water, if it is a broken egg should not float in the water, it will sink.
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Yes, even if it's not bad, it's not fresh anymore, so don't eat it!
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Summary. Hello dear, I'm glad to answer for you, because the protein in the bad egg is destroyed, and a lot of gas is produced, and after the moisture and gas are discharged, the egg will float when it becomes lighter.
Dear to you, the scum is good, I am happy to answer for you, because the protein in the bad egg is destroyed, and a lot of gas is produced, and the moisture and gas are discharged for the first time, and the egg will become lighter, and the beam will tremble.
If you put the eggs in the water, the fresh eggs will easily sink to the bottom of the water, while the bad eggs will float back to the surface. This is because fresh eggs have less air in them and are heavier; If the egg is left for a long time, some of the moisture inside will run out of the small holes in the eggshell, and the bacteria on the outside will also run in from the small holes in the eggshell of the Yishizao stove and make the eggs spoil. At this time, the egg whites start to smell and produce a lot of gases, which will continue to evaporate.
Water and gas are scrambling to get out of the eggshell, and the weight of the egg is much lighter, so if you put the bad egg in the water, it will float.
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If an egg floats in water, it doesn't necessarily mean that the egg is broken. Here we need to understand why the eggs float and where they come from. There are some air chambers inside the eggs that gradually get larger over time, while the weight of the protein and yolk does not change, so they become lighter in the Lao Sen water, causing the egg to float.
However, this does not necessarily mean that the eggs have gone bad, as fresh eggs may also float.
To better tell if an egg has gone bad, other methods should be used. For example, you can tell if an egg stinks by sniffing it. Bad eggs will have a strong foul smell, while fresh eggs will have no taste.
In addition, you can also judge whether it is broken by looking at the appearance of the eggs, which will have some cracks and dents on the surface, while fresh eggs will have a smooth and tidy surface. Finally, you can also tell if the egg has gone bad by opening it and looking inside. If the yolk and egg whites are mixed together, and there is discoloration or odor, then the egg is already bad.
In short, the egg floating in the water does not necessarily mean that the egg has been broken, the correct way to judge whether an egg is bad is to smell the smell, observe the appearance and open it to see the inside. Only when these three methods are used in combination can we accurately judge whether an egg is bad. At the same time, when you buy eggs, you should also choose high-quality egg brands, so as not to cause harm to the body by eating bad eggs.
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Not necessarily. If an egg floats in the water, it doesn't necessarily mean it's broken. The eggs may float in the water because the eggs are not fresh or because there is too much gas in the eggs.
This procedure is called the "cold water identification method" and can be used to determine the freshness of eggs. Fresh eggs have less air in them, so they can sink to the bottom. The longer the eggs are left unattended, the more air in the eggs will gradually increase, and eventually they will float on the surface of the water.
Therefore, if the egg floats in the water, it must be broken, but if the egg is not fresh or there is too much gas inside, then the egg will float more easily. <>
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