How can you tell if an egg is stink?

1. How to tell if a raw egg is bad.

First of all, this requires us to have a wealth of common sense in life.

1.First of all, we need to pick up the egg and put it to our ears, and the sound of shaking the good egg with our right hand will not be very loud, or even no, but if the egg has a very loud noise when you shake it, it means that the egg is broken and cannot be eaten.

2.Put the egg in the water, because the egg has a lot of small pores, the longer the time outside, the easier it is for the outside air to enter the inside, if the egg has sunk into the water, it means that the egg is a good egg. But if the egg is already floating, it means that he has been outside for a long time, and a lot of bacteria have entered it, and it is best not to eat it at this time, because it has gone bad.

3.Break the egg and put it in the bowl, the best state of a fresh egg in the bowl is that its shape is very regular, that is, the yolk is the yolk, the egg white is the egg white, it will not be scattered, if the egg has been broken, it will be very messy, like a pot of thin mud. One of the easiest ways to do this is to smell it, and if it smells very bad, it means that this egg is our legendary rotten egg.

That is, it is broken, and you can't eat it, so throw it away.

2. How to preserve eggs.

When we preserve eggs, it is best to store them in the refrigerator, and then put the tips of the eggs downward, because there are a lot of pores on the tips of the eggs, and if they are facing up, there will be a lot of bacteria and gases, which are easy to enter and make the eggs easy to spoil.

Because the original bactericide in the egg white gradually dies, various microorganisms gradually invade the egg to grow and multiply, and finally the egg components completely disintegrate, spoilage and stink.

The process of turning fresh eggs into rotten eggs is a process of continuous decomposition and consumption of its own nutrients, and it is also a process in which the original fungicides in the egg white gradually disappear, and various microorganisms gradually invade the egg to grow and reproduce, and finally the egg components completely disintegrate, decay and become smelly.

Main ingredients: Self-decomposition products in eggs: In addition to residual proteins and fats, there are amino acids, polypeptides and various carboxylic acids with different molecular weights.

Products decomposed by spoilage bacteria into egg components: gases (carbon dioxide, methane, hydrogen, nitrogen, ammonia, etc.), amines (methylamine, ethylamine, phenethylamine, putrescine, cadaverine, histamine, etc.), hydrogen sulfide, indole, skatosin, mercaptan, low molecular weight carboxylic acid, low molecular weight ketoacid, carboxylic acid, carbonyl compounds, purine base, nitrite, nitrate, etc.

Some of them are the ones that make eggs discolored and foul-smelling, such as ammonia, methylamine and other amines, hydrogen sulfide, indole, skatosin, mercaptans, low molecular weight carboxylic acids, etc.

Mold and bacteria: Eggs contain a variety of pathogenic bacteria such as Salmonella (severe ovarian infection with Salmonella), Proteus, E. coli, etc. Eggs infected with mold may have a moldy odor such as mold pigments and mold.

If infected with toxigenic molds, it is likely to contain mycotoxins.

The eggs will rot because the eggs are long, and the protein (containing S) in them is denatured and deteriorated by various factors, and a series of complex reactions occur to produce H2S (hydrogen sulfide)! Hydrogen sulfide is a toxic gas, and hydrogen sulfide is the smell of rotten eggs!

There are sulfur-containing proteins in eggs, and the outside air and bacteria inside enter the eggs through the skin of the egg shell, and various biological and chemical reactions are most likely to produce a substance called hydrogen sulfide, which is a typical rotten egg smell and highly toxic.

Because the egg shell has tiny holes that cannot be seen by the naked eye (probably used to "breathe"), and this hole can be in contact with the outside world, and the bacteria from the outside world enter the egg through this hole, because the egg has a thin protective film (equivalent to the human body's defense line), it will not directly enter the egg white and yolk level for a while, so the egg will not deteriorate. Having a protective film is equivalent to having a shelf life, and after the shelf life has passed, the egg has gone bad.

If the eggs are left for a long time, they will be invaded by bacteria and spoiled, and in this process, hydrogen sulfide is produced, which is the smell of rotten eggs that we smell.

The shell of the egg is not airtight, it has tiny pores, and over time bacteria enter the egg through these tiny pores and the egg will stink.

Proteins deteriorate to produce hydrogen sulfide, which smells like hydrogen sulfide.

Eggs that have been left out for a long time will release a gas called hydrogen sulfide which is smelly.

One possibility is that the shell is broken, and the substances in the egg react with the gas in the air, and it will rot, and then it will become stinky!

For a long time, the egg looks like no one pays attention to him and wants to get your attention.

It's bad, brother Gaocai, it's good to ask this question!

As a joke, A is an EGG......Hey.

I'm dizzy, eggs have their own holes to breathe, eggs react with oxygen in the air, and of course they stink.

Hey, LZ doesn't smell like something for a long time.

What you eat will not go bad if you leave it for a long time, otherwise where will the preservatives come from.

Eat what is inside the stuff that doesn't spoil.

1. The gas that smells of rotten eggs is hydrogen sulfide (H2S).

2. Hydrogen sulfide is an inorganic compound with the chemical formula H?s。Under normal circumstances, it is a colorless, flammable acid gas, with a foul odor and a smell like rotten eggs when the concentration is low; At high concentrations, there is no odor (because high concentrations of hydrogen sulfide can paralyze the olfactory nerve).

It is soluble in water, and at 0 °C, 1 mole of water can dissolve about moles of hydrogen sulfide. The aqueous solution of hydrogen sulfide is called hydrosulfuric acid, which is a weak acid, and when it is heated, hydrogen sulfide escapes from the water.

The gases that smell rotten eggs are hydrogen sulfide and sulfur dioxide.

Sulfur dioxide is toxic, colorless, and a gas with a peculiar rotten egg odor. Soluble in water, ethyl alcohol and ether. Liquid sulphur dioxide is relatively stable and inactive.

When the gaseous sulfur dioxide is heated to 2000 degrees, it does not decompose, does not burn, and does not form a first-class mixture with air.

Hydrogen sulfide is colorless, highly toxic, and is also a gas with a special rotten egg odor, even low concentrations of hydrogen sulfide can damage people's sense of smell. Because high concentrations of hydrogen sulfide can paralyze people's olfactory nerves, when the concentration is high, they will think that there is no smell. It is important to note that using the nose as a means of detecting this gas is deadly.

Reasons why eggs go bad

Rotten eggs are because the protein in the egg is polluted by external pathogens, and the protein gradually deteriorates, and in the process of spoilage, ammonia and sulfur and other gases will be produced, and once these gases come into contact with the oxygen outside, they will emit a foul smell. If the egg is rotten because the protein in it has deteriorated and denatured, it should not be taken at this time, otherwise it will lead to a toxic reaction.

Egg refrigeration preservation is a common method for most people, following the principle of low temperature preservation, if there are not a lot of eggs at home, or the space of the refrigerator is enough, put the refrigerator for refrigeration is the longest way to preserve it. There will be dirty things on the surface of the eggs you just bought, remember not to rinse with water, because the surface of the eggs has formed a natural barrier to isolate the invasion of external bacteria, if you store it at room temperature, the surface of the eggs must not be washed with water.

Hydrogen sulfide is an inorganic compound with a chemical formula of H2S. Under normal circumstances, it is a colorless, flammable acid gas, with a foul smell when the concentration is low, and the smell is like rotten eggs; At high concentrations, there is no odor (because high concentrations of hydrogen sulfide can paralyze the olfactory nerve). It is soluble in water, and at 0 °C, 1 mole of water can dissolve about moles of hydrogen sulfide.

The aqueous solution of hydrogen sulfide is called hydrosulfuric acid, which is a weak acid that escapes from the water when it is heated.

1.Orange peel deodorization: take 500 grams of fresh oranges, after eating oranges, wash and dry the orange peel, disperse it on the wooden cabinet, after 3 days, the fragrance is fragrant, and the smell is completely gone.

2.Vinegar deodorization: Pour some vinegar into an open glass bottle and place it on a wooden cabinet.

3.Lemon deodorization: Cut the lemon into small slices and place it in a wooden cabinet to remove the odor.

4.Baking soda to remove odor: Take 500 grams of baking soda (sodium bicarbonate) in two wide-mouth glass bottles (with caps open) and place them on a wooden cabinet.

How to deal with the smell of rotten eggs in the refrigerator:

The smell of rotten eggs in the refrigerator may be caused by the fact that the refrigerator has not been used for a long time, some of the food on it is rotten, or it may be that the food is not placed in a sealed box and the smell of other food in the refrigerator. Start by cleaning up the food in the fridge, opening the door once, and wiping it down with a damp rag.

Then cut the fresh lemon in half, the lemon is cut side down, and put it in the refrigerator, which can be raised to absorb the odor in the refrigerator.

Then put some fresh oranges in the refrigerator, the orange peel can absorb the odor in the refrigerator, and the pulp is placed in the crisper box.

Finally, put a packet of edible alkali in the refrigerator, which can absorb the odor in the refrigerator.

Hope the above information will be helpful in solving your problem.