The harm of formaldehyde to people is first of all, the damage to the respiratory system, which aggravates skin allergic reactions and increases the possibility of cancer in severe cases. Formaldehyde pollution, in the eyes of most people, only when decorating a house will be encountered. As long as you stay away from formaldehyde in decoration, formaldehyde pollution can be avoided in life.
However, in life, there are several foods that add formaldehyde during production or preservation. Some are even foods that children prefer, which are extremely harmful to our health.
1 Low-quality vermicelli
vermicelli is a specialty traditional food made of silk-like drying made of sweet potatoes, potatoes, etc. after slurry and precipitation. The finished vermicelli is off-white.
In the past, alum was added in the process of making vermicelli. In recent years, after expert research and development, vermicelli can produce alum-free vermicelli through vacuum treatment.
toxic vermicelli can be synthesized into the "vermicelli" eaten on our table using three toxic and harmful industrial raw materials: industrial gelatin , sodium hexametaphosphate . After soaking in formaldehyde, this "toxic vermicelli" flows into roadside stalls and small restaurants in large quantities.
As a traditional delicacy, vermicelli enriches our dining table. So how should we identify the authenticity of vermicelli?
1. Observe the color of vermicelli
Good vermicelli are generally dark and translucent, because starch and air come into contact with the surface, and the surface is oxidized. Moreover, good vermicelli will inevitably have some small bumps. If the vermicelli you see is crystal clear and the thickness is very well-proportioned, then this vermicelli is very likely to be artificially synthesized
2. Observe the toughness of vermicelli
High-quality vermicelli, it is not so easy to break when it is broken, and it will not break even after 180 degrees. It is full of toughness, which is high-quality vermicelli.
. In our industry, vermicelli with a lot of formaldehyde will have many sticks that are stuck together, without any elasticity, and can easily break.
3.Burn
When purchasing vermicelli, use the lighter you carry with you to burn the vermicellili. Bring a lighter with you. Just a small piece of it is enough. Real sweet potato vermicelli will quickly expand and grow when heated, accompanied by a sizzling sound. After burning, the ashes will be all fine powder. After the fake vermicelli is burned, it is full of hard residue, and the graininess is obvious, which is the vermicelli with too much additives.
2 Low-quality pasta
How should we identify the behavior of adding industrial formaldehyde to the pasta and flour for longer?
First look at the color. Normal pasta is beige or light yellow, shiny but not overly white.
Smell the smell again. If the pasta contains a special smell or inexplicable fragrance and a faint sour taste, etc., which do not belong to the smell that the flour itself should have, most of which are the taste of additives. We should choose carefully.
Again, normal pasta is soft and easy to break, and can be cooked quickly; inferior pasta is more tough and not easy to break.
3 Baby cabbage or cabbage
Similarly, baby cabbage is delicious but difficult to store. In order to extend the storage time and prevent the roots from rotting, some merchants will treat the roots of baby cabbage when selling baby cabbage. The method is to dip it in formaldehyde preservatives.
So before we eat baby cabbage, we must cut the roots and throw them away, soak them in clean water for a period of time and wash them, and then boil them in boiling water before eating.
4 Various frozen aquatic products
The frozen fresh shrimp hairtail and other aquatic products we usually use, and some vendors will also soak them in formalin for the sake of profit. Formalin is a diluted formaldehyde aqueous solution . When purchasing these products, we must also keep our eyes open. We must be more careful about things that look bright and beautiful. If you pick them up and smell them, you will smell a pungent smell. Moreover, this kind of food feels hard and it is difficult to bend. Most of the hard ones are soaked in formaldehyde solvents.
