How long is the shelf life of raw eggs generally? Can they still be eaten after 3 months in the fridge, and 5 kinds of eggs you must not eat

Eggs are one of the protein foods we commonly eat in daily life. Many people think eggs can be kept for a long time, as long as the eggshell is not damaged, but this is actually a wrong idea. Eggs also have a shelf life. So how long is the shelf life of raw eggs generally? Can they still be eaten after 3 months in the fridge?

1. How long is the shelf life of raw eggs generally

Generally, at room temperature, raw eggs can be kept for about 1 month. At indoor room temperature in winter it is 15 days, and at indoor room temperature in summer it is 10 days.

Note: many people like to wash eggs before storing them, but this actually damages the egg's original outer shell membrane, allowing bacteria and microorganisms to enter the egg freely and speeding up spoilage.

2. How long is the shelf life of eggs in the fridge

1. At a fridge temperature of 2-5°C, eggs can generally be kept for about one month.

2. Eggs kept in the fridge for 3 months cannot be eaten anymore; they have already gone bad. Although the surface looks no different, the yolk inside has already become rotten and smelly. I have had this experience myself: after putting the eggs I bought into the fridge, I did not pay any attention to them, and after one month the eggs had already gone a bit bad and could not be eaten. So it is better to eat bought eggs as soon as possible.

3. Eggs kept for five months also cannot be eaten, because over time the mucin in the egg white gradually thins under the action of protease, and can no longer hold the yolk in place. Bacteria have already invaded, so they cannot be eaten.

3. Methods for storing raw eggs

1. When placing eggs, put the large end up and the small end down. This allows the yolk to float up and rest against the underside of the air cell, which both prevents microorganisms from invading the yolk and extends the storage period of the eggs.

2. If the eggs you bought can be eaten within 1 week, just put them directly in an egg tray in a ventilated, shaded place; there is no need to put them in the refrigerator (except in summer).

3. If you bought a relatively large amount and the fridge cannot hold them all, you can place the eggs in a ventilated, shaded place, then put some soybeans or other grains in the box holding the eggs to reduce the eggs' respiration.

4. For eggs that need to be stored in the fridge, before storing you can use a dry cloth to wipe and clean the dirtier eggs, but be careful never to wash the eggs to be stored with water.

4. How long can eggs be kept in summer

1. Raw eggs

Raw eggs at room temperature cannot exceed three days. In the fridge they last a bit longer, about one month.

2. Cooked eggs

If kept at room temperature, cooked eggs can only be kept for 1 to 2 days in summer, because summer temperatures are high, cooked eggs contain many kinds of microorganisms, and these multiply very quickly at high temperatures, so the eggs spoil easily.

If put in the fridge, as long as the eggshell is not broken, they can be kept for more than ten days, but some microorganisms in the eggs may still affect egg quality in a refrigerated environment. When eating them, they should be reheated, which ensures food safety.

5. Can eggs that have been kept a long time but do not smell be eaten

Such smelly things are definitely not recommended for eating. They contain large amounts of bacteria. They may cause inflammation of the gastrointestinal tract.

6. These 5 kinds of eggs cannot be eaten

1. Cracked eggs

During transport, storage and packaging, due to vibration, squeezing and other reasons, some eggs develop cracks or fissures, and are very easily invaded by bacteria. If they have been left for a long time, they are not suitable for eating.

2. Eggs with a stuck shell

Because these eggs have been stored too long, the yolk membrane goes from tough to weak, and the yolk sticks tightly to the eggshell. If the area is reddish, they can still be eaten, but if the egg membrane sticks tightly to the shell and does not move, and the outer part of the stuck skin is dark black and has an off smell, they are no longer suitable for eating.

3. Rotten eggs

Because bacteria invade the egg and multiply in large numbers, spoilage occurs, the eggshell turns dark gray, and the shell may even rupture due to expansion of hydrogen sulfide gas inside, while the mixture inside the egg becomes gray-green or dark yellow and gives off a foul odor. Such eggs cannot be eaten, otherwise they will cause bacterial food poisoning.

4. Eggs with a broken yolk

Violent shaking during transport and so on can rupture the yolk membrane and cause mechanically broken yolk; or, if stored too long, bacteria or mold enter the egg through the shell pores and destroy the protein structure, causing the yolk to break and the egg liquid to become thin and cloudy. If the broken yolk is not serious and there is no off odor, it can still be eaten after frying, boiling and other high-temperature treatment, but if bacteria have multiplied inside the egg, the protein has already denatured, and it has a bad smell, then it cannot be eaten.

5. Dead embryo eggs

During incubation, eggs may be contaminated by bacteria or parasites, and combined with poor temperature and humidity conditions and other reasons, the embryo stops developing; such eggs are called dead embryo eggs. The nutrients contained in these eggs have already changed. If the embryo has been dead for a relatively long time, the protein is decomposed and produces many toxic substances, so they are not suitable for eating.