The scarlet letter printed on eggs is a standard food safety ink, which is non-toxic; You can wipe it with vinegar, because vinegar is weakly acidic. If you wipe the eggshell surface with a cotton swab dipped in vinegar, you can wipe the printed logo clean without affecting eating.

Nowadays, egg producers will spray-print the production date or production base on each egg when it leaves the factory, so that consumers can trace the source.

Although the words printed on eggs can't be erased, they will disappear after cooking. This is because there are many tiny holes on the surface of the eggshell and the inner membrane of the egg, and the printed words penetrate into the egg during heating.

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Nutrition and efficacy of eggs;

1. Besides breast milk, eggs are the closest food to human body in protein, and their absorption rate is better than milk, meat or soybeans. Eggs are one of the best and most natural supplements, with high quality and high protein content.

2. Eggs contain precious lecithin. Lecithin can reduce blood cholesterol and promote the absorption of fat-soluble vitamins.

3. Eggs contain all B vitamins, rich fat-soluble vitamins, including vitamins A, D, E and K, and trace vitamin C. ..

4. Egg yolk contains healthy ingredients such as lutein and zeaxanthin, which helps the eyes to filter harmful ultraviolet rays, delay eye aging and prevent eye diseases such as macular degeneration.

The benefits of eating eggs regularly:

1, brain and intelligence. Lecithin in egg yolk and so on. Have a great effect on the nervous system and physical development? Use. Lecithin can release choline after being digested by human body, promote brain development and improve memory.

2. Protect the liver. Protein in eggs can repair liver tissue damage. Lecithin in egg yolk can promote liver thinning? Cell regeneration enhances the body's metabolic function and immune function.

3. Prevent cancer. Eggs contain more vitamin B2, as well as minerals with anticancer effects such as selenium and zinc.

4. delay aging. Eggs contain almost all the nutrients needed by the human body, and regular consumption of eggs can prolong life.

Sina. Com- Is the spray code on the eggshell poisonous? Health News Network-Nutritionists summarize the effects of eggs on disease prevention: strengthening brain, improving intelligence, protecting liver and preventing cancer.