How many degrees is suitable for putting eggs in the refrigerator

It is recommended to keep the temperature of eggs in the refrigerator and freezer at around 4 degrees Celsius. The storage temperature of eggs is mainly affected by factors such as the structure of eggshell pores, microbial growth rate, protein stability, storage time, and temperature fluctuations in the refrigerator.

1. Eggshell Pore Structure

There are thousands of tiny pores on the surface of eggs, and a low temperature environment can slow down the evaporation of water inside the pores and prevent the egg white from becoming thin. 4 degrees Celsius can shrink the pores to a suitable state, preventing external bacteria from invading and maintaining internal humidity balance. Excessive temperature can cause the expansion of pores and increase the risk of pollution.

2. Microbial reproduction

Common foodborne pathogens such as Salmonella have a significantly reduced reproduction rate at 4 degrees Celsius. This temperature can inhibit most bacterial activity and extend the shelf life of eggs to 3-5 weeks. When the temperature exceeds 7 degrees Celsius, the bacterial proliferation rate will double.

3. Protein Stability

Egg protein can maintain a stable spatial structure at 4 degrees Celsius, avoiding protein denaturation caused by temperature fluctuations. Low temperature may cause slight freezing of the egg mixture, resulting in damage to protein molecules; Excessive temperature accelerates protein breakdown, affecting taste and nutrition.

4. Storage time

Short term storage can accept a temperature range of 2-6 degrees Celsius, but long-term storage needs to be strictly controlled at 4 degrees Celsius. For every 1 degree Celsius increase in temperature, the rate of decrease in egg freshness increases by about 10%. After purchase, it should be placed in the refrigerator as soon as possible to avoid storing at room temperature for more than 2 hours.

5. Temperature fluctuations

The refrigerator should maintain a constant temperature, as frequent opening and closing of doors can cause local temperature rise. It is recommended to place the eggs in the middle inner position of the refrigerator, away from the door frame and air outlet. Storing eggs in a sealed box can reduce the impact of temperature changes on egg quality.

In addition to controlling temperature, when storing eggs, attention should be paid to maintaining a dry environment and avoiding mixing with other strongly scented foods. It is recommended to keep the eggs in their original packaging box for storage, which can buffer temperature changes and prevent cross contamination. Regularly check the display value of the refrigerator thermometer to ensure the normal operation of the refrigeration system. If cracks or mucus are found on the eggshell, it should be discarded immediately. When cooking, ensure that the egg yolk is completely solidified to kill potential pathogenic bacteria.