Is the egg white yellow if the egg is not fresh, and is the egg yolk wrinkled and not fresh

Generally speaking, after a period of incubation, the egg white will turn pale yellow The eggs that may be eaten are hatched eggs, that is, according to the egg It is normal for the egg yolk to be surrounded by a layer of gray substance, because this part is in contact with the egg white It is also possible that the egg-laying chicken eats the feed containing pigments. Nowadays, some people add coloring to chicken feed in order to pass off ordinary eggs as grass eggs. Generally, egg whites should be white when cooked.

Yes, it means that after a long time, the protein has deteriorated.

Good, fresh eggs, yellow and clear are not mixed.

Your eggs are going to spoil if they are too long or not properly stored, so the yolk and egg white are confused.

Protein? You're talking about egg whites, now chickens are raised with feed, which is different from the farm chickens in the past, so the nutritional value is also much lower.

It may be because you have been cooking for too long, it is recommended to control it within 20 minutes, in fact, one of the main characteristics of the eggs that are not fresh is that the taste is too smelly.

If the boiled egg is slightly yellow, it means that the egg is not fresh. The egg whites that are normally boiled should be white in color and should not appear yellow.

If the boiled eggs are slightly yellow, it means that the heat is too high when the eggs are boiled, and the boiling time is too long, so when boiling the eggs, it must be on low heat, and then boil for five to seven minutes.

Wrinkled yolks of eggs are not necessarily fresh, and may be the cause of artificial eggs。When buying eggs, look at the appearance of the eggs, if the shell is cracked or broken, it is not a fresh egg. If you can hear a very pronounced liquid sound when you pinch the egg and shake it, it is a sign that the egg is not fresh.

When exposed to light, stale eggs are generally gray and dark, and the air chamber is very large.

The appearance is not fresh.

When observing eggs, look at the shell of the egg, if the shell has been cracked or damaged, it will definitely not be fresh. If you find that the eggshell is rough and there is a layer of white powder on the surface when you touch the egg, it proves that the egg is fresh, and the shell of the fresh egg is generally intact.

Shake. When picking eggs, pinch the eggs with your thumb, index finger, and middle finger and start shaking, if you can hear the obvious liquid sound, the eggs are not fresh, because the eggs will be stored for a long time, and the air chamber of the eggs will be incomplete, so that the egg liquid will have a lot of space for activities, and it will make a sound when shaking.

You can eat, but it's best not to eat, the eggs are white and yellow, it may be that the eggs have been placed for a long time and the amount has changed again, it doesn't matter if you eat one or two, eating too much will cause nausea and vomiting, if the gastrointestinal function is not good, you can't eat it, you usually buy eggs to buy fresh, it's best to eat now, if you can't eat it all at once, put it in the refrigerator, if you put it somewhere else, it's best to eat it within a week. It should be emphasized that according to the description of your condition, first of all, you don't have to worry too much, eat lightly, and don't expose yourself to the sun.

There are many reasons for the yellowing of eggs, in the process of transportation, the eggs are subjected to intense ** caused by the rupture of the yolk membrane, resulting in the phenomenon of yellowing, just like we beat eggs with chopsticks, the yolk and egg white are mixed, this is called mechanical yellowing, and the nutritional value of such eggs is basically unchanged. In the process of egg storage, after the egg white is thinned, the moisture slowly penetrates into the egg yolk, and the egg yolk expands to the point that it breaks the yolk membrane, and the yellowing phenomenon will also occur. After a fertile egg hatches over a period of time, the yolk also diverges.

In addition to the above reasons that cause eggs to turn yellow, bacteria and molds invade the inside of eggs through the eggshell pores, which will also cause eggs to turn yellow. Loose yolk eggs caused by the first three reasons can continue to be eaten, while loose yolk eggs caused by bacteria and mold may pose food safety risks.

If there is no peculiar smell, it can be eaten after high temperature cooking, and it is recommended to use frying, because this cooking has a masking effect on the yellowing, and the taste change will be more obvious when boiled or steamed. If the egg has become stinky, it means that the bacteria have multiplied in the egg and can no longer be eaten.

The egg yolk is whitish, possibly because it has expired, and this light yellow should be avoided to avoid harmful effects on the body. The whitish yolk may also be due to the lack of carotenoids in the feed fed to the chickens, or it may be fake eggs, or it is eaten with other hormones, so it is best not to eat this type of eggs for insurance.

When choosing eggs, you can first hold the eggs in your hands, gently shake the eggs, and listen carefully to the sound of the yolk hitting the eggshell.

Put the egg in a basin full of water, if the egg sinks in the water, it is a fresh egg, and the egg that floats up is bad, because the specific gravity of the fresh egg is larger than that of water, so it will sink in the water, and the protein inside the egg will produce gases such as ammonia and hydrogen sulfide, and if there is gas in the eggshell, the specific gravity of the egg is smaller than that of water, so it will float up when it is placed in water.

Observe the appearance, shape, color, and cleanliness of the eggs. The shell of the good quality fresh egg is clean and dull, and the color of the shell is more distinct with a layer of hoarfrost. The powder on the surface of the shell of an inferior egg will peel off, and the shell will be oily and shiny, dark gray or dark black.

1. The egg yolk is white because the type of feed has an impact on the color of the egg yolk.

2. The yolk of the egg is pale white, which is related to the food fed, which is caused by metabolism in the body, and can be eaten with confidence.

3. In fact, poultry itself cannot synthesize carotenoids by itself, and can only be obtained by ingesting feed. Therefore, it may be related to the specific composition of the chicken feed that lays eggs, and it should have little impact.