The benefits and disadvantages of eating preserved eggs

Preserved eggs, also known as clay eggs, egg, etc., are unique traditional flavored egg products in China. They are made from duck eggs and marinated with alkaline substances such as quicklime and caustic soda. Because the egg egg protein often has a pine needle pattern, it is also called pine egg. The preserved egg tastes mellow and has a lot of eating methods, such as preserved egg porridge and cucumber egg soup, which is very popular among food lovers. But it is said that preserved eggs contain high levels of lead and are harmful to the human body. So what is the truth? What are the advantages and disadvantages of eating preserved eggs?

Does the preserved egg contain lead?

The regular process production is now lead-free preserved eggs. The content of heavy metals in traditional preserved eggs is indeed higher, because in order to promote protein coagulation and obtain a more beautiful crystal pattern of pine flowers, yellow egg powder (lead oxide) is added to the traditional preserved egg processing formula, which leads to lead in preserved eggs. Higher. There are also some small workshops that use industrial copper sulphate to save costs. Industrial copper sulphate contains heavy metals such as arsenic and copper. Because lead is very harmful to the human body, people have found mixed salt of food grade copper sulfate, zinc sulfate and selenite sulphate instead of yellow dan powder to make low-lead or unleaded preserved eggs. According to the provisions of "GB/T 9694-2014 preserved eggs", the lead content of preserved eggs should not exceed 0.5 mg / kg. Therefore, as long as the preserved eggs produced by large companies purchased by regular channels, there is no need to worry about excessive lead in normal consumption. However, the proportion of lead in some small workshops and small enterprises is still relatively high, especially in the farmer's market.

The benefits of eating preserved eggs

Heat and heat

Preserved eggs are cold, sweet, sputum, have the effect of diarrhea and hangover, go to the big intestine fire, and vinegar can be used to heat and reduce inflammation, prevent high blood pressure, relieve thirst and so on.

Promote appetite

Preserved eggs are marinated in duck eggs. They are rich in minerals, but their fat and total calories are reduced. Eating preserved eggs can stimulate the digestive organs, increase appetite and promote nutrient absorption.

Relieve hyperacidity

Because it uses a strong alkaline substance such as quicklime when picking preserved eggs, it is an alkaline food that neutralizes stomach acid and relieves stomach pain caused by excessive stomach acid.

The disadvantage of eating preserved eggs

Lead exceeded

Although the production process of preserved eggs has been improved, there is still a certain amount of lead in preserved eggs. If long-term consumption of preserved eggs is high, it will cause anemia, low immunity, memory loss, activeness and irritability.

Reduced appetite

During the pickling process, the structure of nutrients such as protein has changed. Regular consumption may affect appetite and even abdominal pain and diarrhea.

Influence digestion

In summer, the gastrointestinal function of the human body is weakened, and the secretion of gastric juice is also reduced. The preserved egg is an alkaline food, which neutralizes stomach acid after consumption, thereby affecting the digestion and absorption of food by the human body.

Bacterial contamination

Preserved eggs are easily infected by Salmonella, which can provide nutrients for Salmonella, allowing them to multiply quickly. If you eat this contaminated preserved egg, you will develop symptoms such as nausea and vomiting, diarrhea and abdominal pain. Therefore, Chengdu CDC listed preserved eggs as the first high-risk food.

Influence development

Children's metabolism is extremely strong, and lead in preserved eggs is easily absorbed by children and remains in the body. Regular consumption can cause bone and tooth dysplasia, mental decline, and inattention.

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