10 interesting things about chicken eggs

The average hen lays up to 270 eggs per year, while each egg takes about 24 hours to form inside the chicken.

Calcium carbonate is the material that makes up eggshells, and it is also the main ingredient in stomach acid reducers. Photo: globe-views.com

1. Calcium carbonate is the material that makes up eggshells, and it is also the main ingredient in stomach acid reducers. Eggshells account for 9% to 12% of the total weight of an egg, and contain tiny holes that allow oxygen, carbon dioxide, and moisture to escape.

2. Egg whites are made up of albumen protein (which contains about 57% of the egg's protein). Nutrients in egg whites include: niacin (vitamin B3), riboflavin (vitamin B2), chlorine, magnesium, potassium, sodium, and sulfur.

3. The hen's diet (mainly cereal grains containing yellow and orange plant pigments) determines the color of the egg yolk.

4. Egg color varies depending on age and many other factors. If the egg white is pink or iridescent, the egg is spoiled and should not be consumed.

5. According to the Egg Safety Center, blood sometimes appears in eggs due to small blood vessels bursting in the yolk. This does not mean the egg is unsafe.

6. The average hen lays between 250 and 270 eggs per year.

7. The egg reaches a temperature of about 40.5°C when laid.

8. In America, white eggs are preferred. However, people in New England prefer brown eggs.

9. It takes about 24 to 26 hours for an egg to form in a hen.

10. China is the world's largest supplier of eggs. It produces about 390 billion eggs a year (about half of the world's supply).

According to VnExpress