There are many kinds of eggs on the market, and the proportion of size difference is also relatively large. If it is a free-range egg, there may be 12 eggs per catty, and the native eggs are smaller, and the eggs laid by the most common factory chicken are slightly larger.
When choosing an egg, the first thing to look at is the appearance. If the egg is clean and complete in appearance, shiny in color and undamaged, it is a fresh egg.
You can also shake the egg, pick it up and shake it a few times. If there is water, it means that the eggs are not fresh. If there is no sound of water, the eggs are fresh. Pick it up, pile it up and illuminate it with sunlight or light, and observe the air chamber inside the egg. If the air chamber is relatively large, the eggs are not fresh.
Extended information eggs contain almost all the nutrients needed by the human body. One of the longevity experiences of many elderly people is to eat an egg every day. Many health medicated diets circulated among the people in China are also inseparable from eggs. If the eggs are processed into salted eggs, the calcium content will increase obviously, which is about 10 times of that of fresh eggs, which is especially suitable for people who want to supplement calcium.
Eggs contain more vitamin B2, which can decompose and oxidize carcinogens in human body. Trace elements in eggs, such as selenium and zinc, also have anti-cancer effects. According to the analysis of human cancer mortality in the world, it is found that cancer mortality is inversely proportional to selenium intake.
Baidu encyclopedia-eggs
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