Ceramic bowl, imitation porcelain bowl, stainless steel bowl, plastic bowl, wooden bowl, glass bowl … Which bowl is your home?

Daily dry rice, bowl is one of the indispensable tableware. But have you noticed the bowl for meals?

Let ’s take a look at what bowls are in inferior bowls and what kind of materials should be selected.

1

What are the hazards of imitation porcelain bowls?

The texture of the imitation porcelain bowl is similar to that of ceramics. It is not only difficult to break and the heat insulation effect is good, but it is easy to clean without oil. It is widely favored by the restaurant owner.

The imitation porcelain bowl is generally made of deedide resin material. Byamine resin is also called melamine formaldehyde resin. It reacts to reducing the clustering reaction through melamine and formaldehyde.

Seeing this, many people are full of questions, “melamine”? Intersection “formaldehyde”? Intersection Isn’t this toxic? Why is it still used to make tableware?

In fact, qualified mighty resin tableware does not produce harmful substances such as formaldehyde when used normally.

The desertic resin tableware produced by regular factories generally has a logo, prompting

The use of temperature is between -20 ° C and 120 ° C. Generally speaking, the dense resin is completely toxic at room temperature.

The temperature of the hot soup generally does not exceed 100 ° C, so you can use a bowl of the bowl of the martide resin. but

It cannot be used to install the chili oil that is fried, because the temperature of the chili oil is about 150 ° C. Under such high temperature conditions, the debidal resin will melt and release formaldehyde.

At the same time, studies have proved that after 2 hours of vinegar with 60 ° C with imitation porcelain bowls, the amount of formaldehyde migration increased significantly, so

It is not recommended to use an imitation porcelain bowl to make acidic liquid for a long time.

Some small factories will remain in the bowl because the quality of the process is not completely controlled, and the formaldehyde formaldehyde is not fully reacted. When the surface of the bowl is damaged, it will be released. The formaldehyde has been identified as carcinogenic teratogenic substances by the World Health Organization, becoming a big killer that threatens human health.

2

Stainless steel bowl heavy metals exceed the standard?

Compared with ceramic bowls, glass bowls, imitation porcelain bowls and other bowls, stainless steel bowls are the most resistant to falling.

Stainless steel usually uses iron as a substrate, and then smelled metal such as chromium, nickel, manganese, and molybdenum. Among them, metal impurities such as miscellaneous and cadmium were also participated in lead.

The use of inferior stainless steel bowls is migrated above the above metal elements. The accumulation of a certain amount in the human body will cause heavy metal poisoning.

Researchers use a method of inductive coupling plasma quentera to determine arsenic, cadmium, lead, chromium, zinc, nickel, nickel, manganese, copper, aluminum, iron, cobalt, molybdenum, and other metal elements in stainless steel tableware. The law detects nearly 30 stainless steel tableware with different batches, and the above twelve elements are detected.

The metal element migration in stainless steel tableware has a certain relationship with its content. The more metal migration, the more metal migration.

At the same time, research also shows that with the increase in the number of stainless steel bowls, the amount of metal elements in it gradually decreased,

New stainless steel bowls are easier to migrate more metal than old stainless steel bowls.

3

What kind of material bowl is the safest?

Plastic bowl and imitation porcelain bowl

When an unqualified plastic bowl or imitation porcelain bowl is equipped with hot soup, there will be the risk of other harmful organic matter such as formaldehyde. If you use a steel ball to brush the bowl, the generated micro -plastic will be intake by the human body.

这种碗可能致癌?没想到危害这么大

Stainless steel bowl

Inappropriate use of risks such as migration of harmful metal ions, so

It is not suitable for long -term containing acidic liquids, such as vinegar or lemon juice.

Wooden bowl and bamboo bowl

In a humid environment, it is easy to breed bacteria and mold. Although some wooden bowls and bamboo bowls are applied to a layer of paint to prevent the breeding of microorganisms, this lacquer has the risk of falling off and being consumed by the human body. therefore,

It is best to install some dry foods.

Glass bowl and ceramic bowl

这种碗可能致癌?没想到危害这么大

High chemical stability, and qualified tempered glass bowl and ceramic bowl have good thermal resistance,

You can install food at any temperature without considering the risk of migration of harmful substances.

4

How to choose different materials?

Now most of the “plastic bowls” or “imitation porcelain bowls” on the market are made of deed amine resin. It is best to buy a bowl of well -known brand martial amine resin in large shopping malls.

Do not buy a “imitation porcelain bowl” with a market price far lower than the market price.

Merchants with regular imitation porcelain bowls are generally noticed on the bowl with explanation signs. According to the specific ingredients: A1, A3, A5, A8, be sure to choose A5 or A8. The performance of high temperature resistance will be better.

There is also a plastic bowl that is currently the popular wheat straw plastic bowl. When purchasing, you must pay attention to whether the material of the bottom of the bowl is marked with “wheat straw”. Some bowls with “starch” will also impersonate wheat straw bowls.

When buying, check the label of the bottom of the bowl to have QS marks and product quality certificates, etc. At the same time, pay attention to the content of chromium and nickel in stainless steel. Sorry to buy!

Glass bowl

Divided into different processes: ordinary glass bowls, tempered glass bowls, and high borosilized heat -resistant glass bowls can be distinguished by the identification of the bottom of the bowl.

这种碗可能致癌?没想到危害这么大

Ordinary glass bowls are low, easy to break, and easily burst when it is cold and hot

这种碗可能致癌?没想到危害这么大

The steel bowl “anti -falling” is good, and the maximum working temperature generally does not exceed 300 ° C

这种碗可能致癌?没想到危害这么大

The high -borosilic glass bowl is high -resistant to high temperature, and the working temperature can reach 450 ° C.

Ceramic bowl

The chemical properties are stable, and there are generally no safety issues. You can buy it with confidence.

Source: Science Popularization China (ID: science_china)

Experts in this article: Yang Chao, Ph.D. in Chemistry at the University of Chinese Academy of Sciences

Produced: Mu Yanqiu Huang Linhao

Edit: Dong Jingxue

School pair: Gu Peng

Plastic bowl and imitation porcelain bowl

Stainless steel bowl

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