Do salted duck eggs have Sudan dyes? How to tell if there are chemicals

In fact, compared with the harmful "red duck eggs", the authentic "red duck eggs" can be identified by color and appearance, and several simple identification methods are introduced: Color: The egg laid by free-range ducks will change the color of the yolk with the change of the seasons.

In spring, the food is abundant and nutritious, and the duck eggs are of very good quality, with a slightly red yolk. In summer, the food ** decreases, and the red color of the egg yolk becomes lighter. In autumn, ducks eat rice as their staple food, and the egg yolk is yellowish in color.

In winter, it is fed with fodder, and the yolk is light yellow. Moreover, even if the same ducks lay eggs, the yolk color will vary. When the duck eats the feed with Sudan dyes, the color of the egg yolk is not different from the four seasons.

When boiling eggs: because artificially added pigments are easier to separate, they will float on the surface of the water or dissolve in water when they are placed in water, so if the public finds that the color of the water has changed when boiling eggs, it means that it is likely to be artificially added pigments, and it is best not to eat them. When cutting eggs:

In fact, duck eggs with natural red yolks have "red and yellow" yolks, and after cutting them, you can clearly see red oil flowing out, which is delicious. The yolk of the eggs laid by the ducks who have eaten the "red" feed is bright red, and the salted duck eggs made from it can smell the smell of cornmeal after being cut, and the yolk is hard and dry. According to relevant experts, first look at the color of the egg yolk.

The yolk of a red-hearted duck egg is very red, while the yolk of a regular duck egg is yellow. Secondly, the eggs of the red duck contaminated with Sudan Red IV are not easy to cook. Beat the eggs into a pot and boil, the yolks are hard to cook for 10 minutes.

Normal duck eggs (including natural red duck eggs) will definitely be cooked in 10 minutes, and the yolk will be powdered. Experts believe that the general belief that red duck eggs are more nutritious is false. Jiang Zhuoqin, director of the Department of Nutrition at the School of Public Health of Sun Yat-sen University, said that this is a consumer misunderstanding, and duck egg yolks have the same nutrition regardless of whether they are red or yellow.

Theoretically, the red heart duck egg is the Sudanese red duck egg. Take a look at the pattern below and you can identify it at a glance.

Judging from the shell, the normal shell of a red heart salted duck egg should be yellowish-white or blue-white.

The shell of salted duck eggs with Sudan dyes is light red.

It is recommended to wash the shell of the duck egg first to see if there is any abnormality in the color.

Judging from the egg yolk, the salted duck eggs containing Sudan red are crimson red, and it can be seen that the red color is abnormal.

There is no difference between the two in terms of protein, and it cannot be distinguished by the criterion "the protein is normal".

In the absence of instruments, we can only judge from experience, first of all, why use Sudan dyes, that is, because the foreign chickens that want to feed the feed and do not feed the same egg yolk color as the stupid chickens, from the root point of view, it is also driven by interests, if you add Sudan dyes, I don't believe that no one will add, the interest is to use foreign eggs to pretend to be stupid eggs, know these are easy to do, if the egg yolk is very red or even blood red and other characteristics do not match the stupid eggs (see the identification of stupid eggs for details) that is Sudan red eggs, In addition, the color of the egg yolk containing Sudan red will change from red to yellow and white after boiling... I guess so. I also searched for it on the Internet.

Put a little bit in the cooking oil, don't stir it, add Sudan dyes and the whole oil will be red.

Sudan dyes are a chemical dye and not a food additive. Its chemical composition contains a compound called naphthalene, which has an azo structure, and due to the nature of this chemical structure, it is carcinogenic and has obvious toxic effects on the liver and kidney organs of the human body.

Adding Sudan dyes to duck eggs can make the yolk of the duck egg appear more rosy.

Thank you! Good luck!!!

One characteristic is that the yellow is slightly red, but generally not to this extent, some people do not learn the means of nourishment of Baiyangdian, but rely on the use of dyes. We know that Sudan dyes are soluble in fat, and egg yolks are lipids, and all of a sudden they come to the yolk, making the yolk very red, which is a malicious fraud. The added ingredient is Sudan No. 5.