An egg weighs about 50g, contains 6-7g of protein and 5-6g of fat. Every100g of eggs contains 147 calories. According to the analysis, every100g of eggs contains12.58g of protein, mainly ovalbumin and ovalbumin, and contains 8 kinds of amino acids necessary for human body, which is very similar to the composition of human protein. The absorption rate of protein in eggs can reach 98%.

If it is a catty of earth eggs, there are generally about ten, because earth eggs are smaller than ordinary eggs; If it is a farm egg, there are usually six to eight eggs. There are about eight eggs sold in supermarkets, with an average of 60 grams. It depends on the freshness of the eggs. If it is an old egg, there is one more number.

Method for identifying whether eggs are fresh or not

1, weighing

Eggs of the same size, light weight means not too fresh;

2. Shake it and listen to the sound

If you hear the obvious shaking sound, it means that the eggs are generally not fresh;

Step 3 check the validity period

Because the temperature and humidity of eggs stored at home are difficult to control, some eggs can't be said to be fresh even if they are silently shaken. Therefore, it is not recommended to eat again when it is stored for a long time or near the shelf life.