The chicken egg is one of the most popular products in our kitchen, which we buy regularly and in large quantities. However, not all housewives think about how long this product retains its nutritional properties while on the refrigerator shelf. The question of how long raw chicken eggs are stored in the refrigerator becomes especially relevant when you buy them for future use or doubt the freshness of those already in the cell.
Proper storage is not just a matter of saving, but also a guarantee of the safety of your health. Spoiled food can be a source of serious infections such as salmonella, so understanding expiration dates is a critical skill for anyone cooking at home. In this article, we will analyze in detail all the aspects that affect the safety of eggs and answer the most frequently asked questions.
Factors influencing the shelf life of raw eggs
The period during which an egg remains edible is not a fixed value and depends on many variables. First of all, it plays a role temperature conditions. The refrigerator must maintain a stable temperature, usually between +2 and +4 degrees Celsius. Any fluctuations caused by frequent opening of the door or equipment malfunction accelerate the aging process of the white and yolk.
The second important factor is the integrity of cuticles the thinnest film covering the shell. This natural shell protects the contents from the penetration of bacteria. If you wash eggs immediately after purchasing, you wash away this protective layer and their shelf life is dramatically reduced. Therefore, the product should be washed immediately before use, and not before putting it in the refrigerator.
The storage duration is also affected location in the refrigerator. The door is the worst place due to constant temperature changes when opening. The ideal option is a shelf in the back of the refrigerator, where the climate is most stable. If you place the eggs with their sharp nose down, the air sac (puga) will remain on top, which will also prolong the freshness of the yolk.
⚠️ Attention: If the shell has even microscopic cracks, such an egg must be used within 24 hours or immediately cooked, since bacteria penetrate inside instantly.
Finally, the initial quality of the product at the time of purchase determines its entire subsequent life. Eggs of the “Dietary” category (labeled “D”) have a shelf life of only 7 days, while “Table eggs” (labeled “C”) can last much longer. Always pay attention to the sorting date indicated on the packaging or stamp.
Shelf life depending on temperature
Ambient temperature is the main enemy or friend of your supplies. In refrigerator conditions, biochemical processes slow down, which allows the product to remain fresh for weeks. At room temperature, the evaporation of moisture through the pores of the shell occurs much faster, and the risk of proliferation of pathogenic microflora increases exponentially.
If you keep eggs in the refrigerator at a temperature of about +4°C, they retain their properties for up to 90 days (for table eggs). However, this is the maximum period, and consuming them raw (for example, for eggnog or fried eggs) after 3-4 weeks is no longer recommended. For hard-boiling, this period is still acceptable, but the taste will be lower.
When stored outside the refrigerator, at a temperature of about +20°C, the period is drastically reduced. Table eggs can remain in the room for no more than 25 days from the date of laying, and dietary eggs - only 7 days. In the summer, when the room temperature rises above +25°C, this period is reduced to 10-12 days for table eggs.
| Storage type | Temperature | Term (Table eggs) | Term (Dietary) |
|---|---|---|---|
| Refrigerator | 0...+4 °C | up to 90 days | up to 7 days |
| Room (winter) | +10...+15 °C | up to 25 days | up to 7 days |
| Room (summer) | +20...+25 °C | up to 12 days | up to 2 days |
| Freezer (without shell) | -18 °C | up to 1 year | up 1 year |
It is important to understand that the indicated periods are relevant only for whole, unwashed eggs. Violation of the temperature regime, even for a short time, can trigger irreversible spoilage processes that will not stop even after the product is returned to the cold.
How to determine the freshness of eggs at home conditions
Even if the shelf life seems to be met, it is always useful to double-check the product before cooking. There are several proven methods that allow you to accurately determine the condition of an egg without having to break it. The most famous and simplest method is the water test.
To carry out the test, pour cold water into a glass and carefully lower the egg into it. If it lies horizontally on the bottom, you have an absolutely fresh product, no more than 3-5 days old. If the blunt end floats up, but the egg is still standing upright on the bottom, it is about 1-2 weeks old and is suitable for hard boiling or use in baking.
If the egg has floated to the surface of the water and is floating, it should be discarded. This means that a large air space has formed inside due to evaporation of moisture and accumulation of gases, which is a sign of spoilage. Such a product is dangerous for consumption.
The second method is candling. At home, you can use a smartphone flashlight. Shine a light on the blunt end of an egg in a dark room. In a fresh egg, the yolk is barely visible, and the air chamber (puga) has a height of no more than 4-7 mm. If the yolk is clearly visible, movable or stuck to the shell, and the margin is enlarged, the egg is not fresh.
What to do if the egg is broken?
If the egg is broken and you are not sure of its freshness, smell the contents. Fresh protein has almost no odor or smells like lime. The putrid smell of hydrogen sulfide is a clear sign of spoilage. Also pay attention to the consistency: the white of an old egg is liquid like water, and the yolk spreads easily.
Rules for storing washed and broken eggs
Situations when eggs have to be washed before storage or when they are broken require a special approach. As mentioned, washing removes the protective cuticle, opening the pores to bacteria. Therefore, washed eggs can be stored for much less time - no more than 2-3 weeks in the refrigerator, and only on condition that they have been thoroughly dried before storing.
If you have a lot of egg mass (whites or yolks) left after preparing some dish, you can save them. Egg whites in a closed container will last in the refrigerator for about 2-3 days. Yolks spoil faster; it is better to fill them with cold water or oil and use them within 1-2 days.
Freezing is excellent for long-term storage. Raw eggs can be frozen, but only without the shell! When the liquid freezes, it will expand and the shell will burst, staining the entire freezer and creating the risk of contaminating other foods. It is best to lightly beat the eggs, as if for an omelette, pour into ice cube trays or containers and freeze.
⚠️ Attention: Frozen eggs change their texture after defrosting. The protein becomes denser, so it is better to use this mass only for baking or omelettes, but not for frying fried eggs.
The egg mass should be defrosted slowly, in the main compartment of the refrigerator, and not at room temperature. This will help minimize the risk of bacterial growth during the thawing process.
☑️ Check before freezing
Labelling and its impact on terms
In Russia and the CIS countries a clear labeling system has been adopted, which helps the consumer understands how long the product will remain fresh. Each egg is stamped with a letter and number. The letter indicates the category by weight, as well as (indirectly) the sales period. Dietary eggs are marked with a red stamp with the letter “D”.
Eggs that are less than 7 days old are considered dietary. They are most beneficial and are often recommended for baby food or raw consumption (although the latter always carries risks). After 7 days, the egg automatically becomes a table egg, and the marking changes to black with the letter “C.”
Table eggs are divided into categories by weight: highest (B), choice (O), first (1), second (2) and third (3). The shelf life of table eggs, subject to temperature conditions, is 25 days from the date of laying (when sold in a store) or up to 90 days (when stored by the consumer in the refrigerator). It is important to distinguish between these two concepts: the store should sell the egg faster than you should eat it at home.
The number at the beginning of the marking indicates the weight: 3 - from 35 to 44.9 g, 2 - from 45 to 54.9 g, 1 - from 55 to 64.9 g, O - from 65 to 74.9 g, B - 75 g and more. Although weight does not directly affect shelf life, larger eggs are often laid by older hens, and the structure of their protein may differ, but this does not affect the general storage rules.
Frequent storage errors
Many people make typical mistakes that shorten the life of products. One of the most common is storing eggs in plastic containers that were previously used for other products without thorough washing. Leftover food can become a source of bacteria.
Another mistake is transferring eggs from the original packaging into the door compartments of the refrigerator. As already mentioned, the door is a zone of temperature jumps. In addition, in the factory tray, eggs are laid with the sharp end down, which is correct, but in standard refrigerator cells they are often placed haphazardly, which leads to the yolk being displaced and sticking to the shell.
Also, you should not store eggs near strong-smelling foods or chemicals. The shell has a porous structure and works as a filter. The smell of fish, citrus fruits or household chemicals can penetrate inside and spoil the taste of the dish, even if the egg itself has not deteriorated microbiologically.
⚠️ Attention: Never store eggs in the freezer (on top of the refrigerator) or on the windowsill if there is sun there. Direct sunlight and heat destroy vitamins and accelerate spoilage.
FAQ: Frequently Asked Questions
Can I use eggs that expired 2-3 days ago?
If eggs have been stored in the refrigerator all this time, have not been washed and are not damaged, most likely they are still suitable. Be sure to do a water test and smell test after breaking. They may be suitable for baking or hard boiling, but for fried eggs or eggnog it is better not to risk it.
Why does the yolk stick to the shell?
This is a sign of staleness. Over time, the protein becomes more liquid and the air chamber (puga) increases. The yolk floats and dries to the inner wall of the shell. It is better to use such eggs only for dough, having first checked for the absence of odor.
How to defrost frozen eggs correctly?
You need to defrost them slowly, transferring them from the freezer to the main compartment of the refrigerator overnight. Abrupt defrosting at room temperature or in hot water can lead to the growth of bacteria and deterioration of the protein texture.
Does the color of the shell (white or brown) affect the shelf life?
No, the color of the shell depends only on the breed of chicken and does not affect the taste, nutritional value or shelf life of the product. The rules for white and brown eggs are absolutely the same.
Is it possible to freeze eggs in their shells?
Absolutely not. When frozen, the contents expand and the shell will burst. This will lead to contamination of the freezer and loss of product. You can freeze only the contents without the shell, preferably in a whipped form.