Why are the egg yolks hard and unbreakable?

Why are the egg yolks hard and unbreakable?

Why are the egg yolks hard and unbreakable?

Why are the egg yolks hard and unbreakable?


  People are paying more and more attention to food safety issues. Reports on "rubber eggs" have occurred from time to time, which has had a great impact on consumers. Some suspected that it was caused by the addition of cottonseed meal to feed, and some were false. egg. Today let's take a look at things from a scientific perspective.

  The Poultry Quality Supervision, Inspection and Testing Center of the Ministry of Agriculture and Rural Affairs, the Poultry Research Institute of the Chinese Academy of Agricultural Sciences and the Veterinary College of Yangzhou University, the Poultry Product Quality and Safety Risk Assessment Laboratory of the Ministry of Agriculture and Rural Affairs, and the Jiangsu Institute of Poultry Science and the Animal Husbandry and Veterinary Research Institute of the Anhui Academy of Agricultural Sciences Using cottonseed meal for laying hen feeding experiments, it was not found that it would cause "rubber eggs", but found that the yolk was elastic at low temperatures. Relevant experimental studies were published in the Chinese core journals "Chinese Poultry" and "Livestock and Veterinary Medicine".

  Because the freezing point of the egg yolk is -0.6℃ on average, the set temperature of the refrigerator is generally 0-4℃, and the actual temperature will be biased. When the actual temperature is lower than 0℃, the eggs stored in the refrigerator may have this elastic phenomenon . It is recommended that the fresh eggs purchased by the public should not be close to the inner wall of the refrigerator when stored in the refrigerator, and the container can also be covered with plastic wrap. Take it out of the refrigerator and leave it at room temperature for about 1 hour, it is also easy to break up. It is not necessary to put it in the refrigerator in winter.

  In 2018, CCTV also made a scientific clarification presentation on a similar situation. You can search for "Table tennis eggs are fake eggs? 315 reveal the truth to you" to watch related videos.

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