Eggs are high in protein and rich in nutrients. The most commonly used food in the cooking process, whether eggs need to be cleaned, is a concern of many people. Unwashed eggs can have many hazards.

Local regulations for eggs

Many countries have clear regulations. The U.S. government stipulates that eggs sold in supermarkets must be washed; eggs are sold under refrigeration to extend the “fresh period” of eggs. This kind of regulation exists in many countries and has become a trend. Therefore, it is necessary to purchase an egg washing machine to operate the egg industry, as well as other supporting equipment, egg grader, and egg inkjet printers.

Egg washing machine
Egg Washing Machine

How to test if an egg is fresh?

Type one: The bigger the spread and the more irregular the edges, the more stale the egg will be. Normally, there will be a thin film between the egg yolk and the egg white, which is called “yolk film” professionally. As the storage time becomes longer, the elasticity of the egg yolk film will become smaller and smaller, or even rupture.

And the egg yolk will melt together. The more intuitive result is that when an egg is knocked open, the yolk will spread out immediately, there is no feeling of being “wrapped”, and it is very casual.

Observe the shape of the egg yolk
Observe The Shape Of The Egg Yolk

Type two: Look at the size of the air chamber, the larger the air chamber, the less fresh the eggs will be. Where is the air chamber? When peeling eggs, you often see a dent on the side of the big end of the egg, right? That is the “air chamber” of the egg. From the moment the egg is born, its weight begins to change, generally becoming lighter and lighter.

This is because there are pores in the eggshell, which will allow the moisture in the egg to evaporate continuously, and the weight of the egg will gradually decrease. Yes, the egg baby is still a breathing egg after leaving the mother chicken’s body! But the longer it breathes, the less water it has and the less fresh it becomes.

The air chamber of a newly laid egg is no more than 3 mm. If your egg air chamber is significantly larger than this, the freshness will be lower. Of course, improper storage temperature and humidity will accelerate the weight loss of eggs.

Look at the air chambers of the hard-boiled eggs
Air Chambers Of The Hard-Boiled Egg

How to properly store eggs?

Eggs are easily contaminated with various substances, how can we properly preserve eggs so that we can eat them safely?

1. Do not freeze

Freezing changes the protein, causing the yolk to solidify and possibly crack the shell.

2. do not mix

There are many pathogenic bacteria and dirt on the shell of the stored eggs. Do not buy them and put them in the refrigerator directly, which will cause cross-infection with other foods.

3. Don’t put it sideways

When placing an egg, pay attention to the big end, that is, the end with the air chamber, which can prolong the storage time and prevent the egg yolk from being yellow when it is close to the eggshell.

Store egg
Store Egg

Finally, it is important to note that eggs cannot be stored indefinitely. Generally speaking, eggs stored for 1 to 2 weeks are no problem to eat, and the longest should not exceed 1 month. Otherwise, not only will the nutrients be lost in large quantities, but they will also become “bad eggs”.

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