A lot of native eggs are sold in the market at a lot of prices. The selling point is that they don't eat feed and naturally raise them in free range. Therefore, many people think that native eggs have higher nutritional value than ordinary eggs. Is that really the case? Let's take a look at it next.
What's the difference between native eggs and common eggs
Nutrients
Many people think that native eggs are more nutritious and taste good. However, studies have shown that the nutritional content of native eggs is not higher than that of ordinary eggs, and the environmental sanitation of native eggs is a problem, because the environment of native chicken is not good, and the eggs are more polluted by chicken excrement.
Native eggs are more nutritious than foreign eggs
The nutritional value of native eggs is not higher than that of ordinary eggs. Many people think that native eggs are naturally free range eggs with different nutrition. As a matter of fact, there is no "native egg" classification standard for eggs in the agricultural sector. The free range native eggs are not better than ordinary eggs, and their nutritional value is the same.
The high nutrition of native eggs is hyped
There is no significant difference in nutritional value between the raised eggs and native eggs, and each has its own advantages in nutrition. At present, there is no inspection report proving that the nutritional value of native eggs is higher than that of ordinary eggs, and that the nutritional value of native eggs is higher than that of foreign eggs.
How to identify true and false eggs
1. From the appearance of eggs, native eggs are relatively small, light color, fresh, with a thin white film, tough and thick eggshell, high calcium content, not as crisp and thin as foreign eggs.
2. After the purchase, you need to open the eggshell. The egg white of the native egg is sticky and slightly yellowish. It floats on the egg white and stands upright with a toothpick inserted in the middle of the egg yolk.
3. Real local eggs, just boiled in white water, are also delicious.
4. Although the native egg is small, the yolk is not smaller than the ordinary egg, the ordinary egg is larger, and the egg white has more water, which can be seen when frying the egg.
These eggs must not be eaten
Cracked egg
During the transportation, storage or packaging of eggs, cracks and cracks are caused by vibration and extrusion, which can easily be invaded by bacteria and can not be eaten if they are put too long.
Sticky egg
If the egg is stored for a long time, the yolk film will change from tough to soft, and the yolk will stick tightly to the eggshell, and some parts will be red. However, if the yolk clings to the eggshell and does not move, it will be dark black outside the skin, and there is a peculiar smell, it can not be eaten.
Scattered yellow egg
In the process of transportation, the egg yolk membrane is broken, which leads to mechanical yellowing. If the storage time is too long, the bacteria and mold will invade the egg, destroy the protein structure and make the egg yolk turbid.
Stillborn egg
In the process of egg hatching, due to the contamination of bacteria and parasites, coupled with the poor temperature and humidity conditions, the egg that stops the development of the embryo is stillborn. The nutrition of the egg has changed, the protein has been decomposed, and a variety of harmful substances have been produced.