Skinned eggs contain lead.
Zhu Yi, an associate professor at the School of Food Science and Nutritional Engineering of China Agricultural University, confirms that: lead-free process refers to the non-use of lead compounds in the processing of leather eggs, and lead-free leather eggs do not mean that they are completely free of lead. Because we live in nature, air, soil, water will contain traces of lead, eggs absolutely lead-free is almost impossible to do. As a result, they contain lead and should not be consumed in excess.
Checking methods:
One paw: put the eggs in the palm of your hand and weigh them lightly, good quality eggs are elastic and trembling, no trembling eggs are of poor quality.
Two shaking: pinch the eggs on the ear shaking a few times, listen to whether the water rattling sound, good eggs generally do not have a ringing sound, and the larger the ringing sound may be eggs have been bad.
Three look: the shell of the egg is gray-white, no black spots for the top grade. In the light of perspective, most of the egg was black or brown, a small part of the yellow or light red for quality eggs. If most or all of the brown transparent body and blisters shadow back and forth, for poor quality eggs.
The four taste: If the pickled egg is good, the egg white is more elastic, tea-brown, and there is a pine branch pattern, the center of the yolk is reddish-orange.
Extended Information:
. p>Skin egg consumption precautions:
1, should not be consumed for a long time
Zhiyunda food safety testing consumer experience center of technical engineers Yu Yong, lead, as well as compounds that are harmful to the human body. Regular consumption of food containing excessive lead, resulting in the accumulation of lead in the human body, the human nervous system, immune system, kidneys and other hazards, especially for children's cognitive and behavioral functions have a certain impact, can lead to children suffering from hyperactivity.
2, can be eaten in moderation, it is recommended that children and pregnant women eat less or do not eat
For pregnant women and children, the absorption rate of lead than the general population to be higher than the general population, the general population on the lead absorption rate of only 10% -15%, and pregnant women and children is 3 to 5 times, the absorption rate can be as high as 50%. Therefore, pregnant women and children who eat small quantities of fully qualified eggs are not a big problem, but in case they buy eggs that are not processed in a lead-free process, the risk is high. To minimize the risk, they should be eaten sparingly or not at all.
References: