Figure 1
graph two
figure three
recently, Ms. Zhang, a citizen of Ji'nan, sent a message to the newspaper, saying that the egg yolks bought from the local market were not scattered, flexible and suspicious. At the same time, many media have reported that the United States has made artificial eggs and may be sold to China next year. Whether the egg is artificial or not? The reporter has revealed to you through the experiment.
experimental materials
sodium alginate, lemon yellow food pigments, calcium chloride, paraffin, gypsum powder, water tank, mold
1., take the sodium alginate powder purchased in the quantitative market, and stir with boiling water. For several hours, the bubbles in the solution disappear and the powder is fully dissolved.
2. the quantitative lemon yellow food pigment was added into some alginate solution, stirring evenly, ready for making egg yolk.
3. takes quantitative calcium chloride particles into the water tank and waits for its full dissolution. Acting as an instant.Quot of sodium alginate solution; the fairy water.Quot;.
4. take some sodium alginate solution containing the lemon yellow food pigment and pour into the mold that is equal to the size of the egg yolk, and gently shake it into a circle and throw it into the calcium chloride solution. (Figure 1)
5. waiting for.Quot; yolk.Quot; after shaping, fish out and dry. Prepare to pack into the egg white. (Figure two)
6. to take part of the sodium alginate solution without pigment, and pour into the mold equal to the size of the egg. When it falls in half, the.Quot; the egg yolk.Quot; plug into, and then fall into the other half. Shake it lightly to make it into egg shape and toss it into calcium chloride solution. (Figure three)
7. waiting for.Quot; egg.Quot; after finalizing, get out of the egg and prepare a layer of egg shell, mainly made of paraffin and gypsum powder.
experimental conclusion
1. calcium chloride solution soaked in.Quot; egg yolk.Quot; and package with.Quot; egg white.Quot;.Quot; egg core.Quot; elastic all the time round, pressing no deformation with finger. Viewed from a distance,.Quot; egg yolk.Quot; and.Quot; egg white.Quot; similar to real eggs.
2. carefully observed the artificial egg, which is thicker than the real egg, and the color is deeper, and the egg white is not transparent, and the hardness is harder. Smell it. Artificial eggs have a smell of sodium alginate.
3., because of no blending ratio and other reasons, the mixture of paraffin and gypsum powder made the artificial.Quot; the egg core.Quot; after the package, the shell was a layer of wax and could not be finalized. After the stereotype, the egg shell is ugly and not smooth.
an artificial egg containing more harmful substances and more harmful substances. Based on previous media interviews with artificial egg training institutions, the manufacture of artificial eggs also needs a variety of substances such as acid internal fat, sodium benzoate, cellulose, alum, gelatin and other substances to act as anticorrosion, stereotype and looseness. Because there is no formula, the reporter did not add.
according to people in the industry, among the various additives of artificial eggs, only sodium alginate has no obvious harm to the human body. Gelatin and pigments are not harmful if they use food. But in addition to the addition of additives, they will affect the metabolism of people, the brain, nerve cells, long-term eating may suffer from Alzheimer's disease, and can lead to liver and kidney poisoning.
Ji'nan has not found artificial eggs
the Ji'nan Poultry Association is responsible for the introduction of Mr. Ren, who has successfully developed artificial eggs in the United States, which has caused concern for many egg and poultry farmers in Ji'nan. However, although artificial eggs are lifelike and technically defective, eggshells and egg films are a technical problem. According to relevant functional departments, no artificial eggs have been found in Ji'nan this year.
how to identify artificial eggs? According to the introduction, first of all, the shell of artificial eggs usually has no pores on the real egg shell. At the same time, the egg white and egg yolk of the artificial egg are made of sodium alginate water, as long as the shell is slightly broken, the things inside will shrink because of the evaporation of water. Another way is to pour eggs into a bowl and stir them without foaming.