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Anonymous users2024-02-12There are several ways to distinguish between good and bad raw eggs.
The first method is to knock it directly, directly crack the egg shell, if the yolk is scattered, the egg white and egg white are mixed together, or there is a rancid smell, it means that the egg has gone bad.
The second method is to make your own floating egg in a basin of cold water with a water surface height of about twice the height of the egg. If the egg lies flat on the bottom of the water, it is very fresh, and the fresh egg will sink to the bottom of the bowl, and it may be on the side against the bottom of the bowl; However, if it is tilted or upright in water, it means that it has been stored for a longer time for a small experiment.
The third way is to listen to the sound to tell the difference, put the egg between your fingers and shake it in your ear, and the fresh egg is solid and there is no sound. Rotten eggs have the sound of slag, and the big ones have the sound of hollowing. The cracked egg has a crackling sound. The sound of water is the eggs that have been left for too long.
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Anonymous users2024-02-11Knock it open. Crack the shell of the egg directly, if the yolk is loose, the egg white and egg white are mixed together, or there is a rancid smell, it means that the egg has gone bad.
Float test. Place the eggs in a basin of cold water at a water level about twice the height of the eggs. If the egg lies flat on the bottom of the water, it is very fresh, and the fresh egg will sink to the bottom of the bowl, and it may be on the side against the bottom of the bowl; However, if it is tilted or upright in the water, it means that it has been stored for a long time;
Slightly stale eggs (which have been left for about a week) will also sink to the bottom of the bowl, but there will be a slight fluctuation up and down. And if it floats on the water, it means that the egg has gone bad, don't eat it.
Principle: The longer the egg is placed, the more moisture and carbon dioxide are lost in the egg, and the larger the air chamber in the eggshell. When the air chamber becomes larger, it is easier for the egg to float on the water, and when it shakes, it will make a swaying sound.
Shake to hear. Put the egg between your fingers and shake it in your ear, and the fresh egg will not make a sound. Rotten eggs have the sound of slag, and the big ones have the sound of hollowing. The cracked egg has a crackling sound. The sound of water is the eggs that have been left for too long.
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Anonymous users2024-02-101. Temperature determines the shelf life of eggs.
The temperature is closely related to the date of egg preservation, if the egg is stored for too long, the egg will deteriorate due to bacterial invasion, and the phenomenon of sticky shell, yellowing, etc., the temperature of the egg storage is higher than 25 degrees, and the probability of damage is relatively large, and the summer room temperature is generally stored at 7-
10 days, eggs below 15 degrees can be stored for about 30 days, eggs beyond the shelf life of its freshness and nutrients will be affected to a certain extent.
2. How to identify the quality of eggs.
1.Appearance Method. The egg shell has a layer of hoarfrost powder, which is not very smooth when rubbed by hand, and the fresh egg with a complete appearance is fresh, and the egg with a smooth and dark, incomplete and cracked shell is not fresh.
2.Hand crank. When buying eggs, pinch the eggs with your thumb, index finger and middle finger and shake them, the ones that have no sound are fresh eggs, and the ones that make a shaking sound when shaking by hand are bad eggs. The louder the sound, the worse it is.
3.Irradiation method. Gently hold the egg with your hand and observe the light, the good egg protein is clear and translucent, with a small empty room at one end, and the bad egg is gray and dark, and the empty room is larger. Some eggs have stains, which is a sign of stale or spoilage.
4.Floatation method. Take 500 grams of water, add 500 grams of salt, dissolve, put the eggs into the water, sink at the bottom of the water is fresh eggs, the big head is on the top, the small head is slightly floated at the bottom, the egg is put for too long, completely floating on the water, it is a bad egg, this egg has rotted and deteriorated.
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Anonymous users2024-02-09See whether the surface of the eggshell is shiny and complete, the one with hoarfrost is relatively fresh, and the one with chicken manure is not;
2.Blood on the eggs may be caused by unhealthy chickens;
3.Shake the egg in your ear and it feels empty or lightweight, it may be a bad egg;
4.Add salt to a glass of water, put in the eggs, it is healthy for the eggs to sink, otherwise they are bad.
There are many ways to judge whether the egg is broken, an egg, a table can be done, put the egg on the flat surface of the table, and then gently turn the egg, if the egg turns twice and stops, it means that the egg is very fresh, if the egg turns for a long time and turns quickly, the egg is broken.
Hope it helps, thank you.
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Anonymous users2024-02-08Egg? It's so easy! You shine a flashlight or a light on an egg, and if you see a bloodshot egg, it's bad!
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Anonymous users2024-02-071. Put the eggs in clean water, if the eggs float, it means that the eggs contain gas, then they are spoiled eggs.
2. Observe the inside of the egg with strong light, if the empty chamber inside the egg is large and the egg white is dark, it is not clear. That is, the bad guys.
3. Pick up the egg and shake it with your hand, the egg that makes a sound when shaking is a bad egg, the louder the sound, the more serious the bad.
Precautions for egg purchase.
In the process of transportation, storage and packaging, some eggs will form cracks and cracks due to vibration, extrusion and other reasons, which are easy to be infected by bacteria, and should not be eaten if they are placed for a long time.
Due to the bacteria invading the egg and multiplying in large quantities, the eggshell is dark gray, and even the eggshell is broken due to the expansion of internal hydrogen sulfide gas, and the impurities in the egg are gray-green or dark yellow, and have a foul smell, then the egg can not be eaten, otherwise it will cause bacterial food poisoning. If such eggs appear, they can be smelled slightly closer to where they are placed.
The above content refers to People's Daily Online-Is washed eggs perishable? Eggs can be stored for up to 50 days.
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Anonymous users2024-02-06Eggs will float when placed in water because they become less dense after spoilage.
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Anonymous users2024-02-05Just open it and take a look.
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Anonymous users2024-02-041. Pick up a chicken hall banquet to change eggs, shake it vigorously, there is no sound of good eggs, and there is a sound of bad eggs.
2. Look at the appearance, touch the eggshell with your hands, the ones that are not smooth are good eggs, and the smooth ones are bad eggs.
3. Put it in the water, sink to the bottom of the water is a good egg, float is a bad egg.
4. Use the light to illuminate, the egg white is more clear through the light, the egg Xiang is a good egg with a small empty room, if the egg white seen through the light is turbid, the empty room is a bad egg.
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Anonymous users2024-02-03Here's how to tell if an egg is bad or not:
1. Open directly: the easiest way, if you want to know if the egg is bad or not, open the egg directly, if the egg white and the yolk are mixed together, it means that the egg has deteriorated, smell it carefully and smell a rancid smell next to it, the egg yolk is like a spherical shed, and the egg white is gathered around the yolk, so the egg is not edible. Although this method is the most straightforward, it is not suitable for tea eggs, boiled eggs and other methods.
2. Float test: pour water into a cup, and then put the egg in, if the egg is lying flat on the bottom of the water in the water, then it means that the egg is very fresh and has not deteriorated, if the egg is inclined in the water or the song is standing upright in the water, it means that the egg has been stored for a long time, if the egg is floating on the water, then the deterioration is very serious, so don't eat it.
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Anonymous users2024-02-021. Light: Good eggs are translucent, slightly reddish, and the outline of the yolk can be clearly seen against the light. Even in the face of bright light, the bad eggs still can't see through.
2. Shake: Gently shake the egg at the ear, if there is no sound, it means that the entire egg air chamber and egg yolk are complete. The bad eggs can be shaken with the sound of water.
3. Eggshell: The eggshell of a good egg is bright in color and rough to the touch. Bad eggs have a black eggshell color and are smooth to the touch.
1. Light: Good eggs are translucent, slightly reddish, and the outline of the yolk can be clearly seen against the light. Even in the face of bright light, the bad eggs still can't see through.
2. Shake: Gently shake the egg at the ear, if there is no sound, it means that the entire egg air chamber and egg yolk are complete. The bad eggs can be shaken with the sound of water.
3. Eggshell: The eggshell of a good egg is bright in color and rough to the touch. The shells of bad eggs are black in color and smooth to the touch, and some bad eggs also have red or black mold spots on them.
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