For those who bring meals to your baby, do you know how to use plastic lunch boxes? If used improperly, it may be like them...

The picture comes from the Internet

Zhilijun is also a group of people who carry lunch boxes to and from get off work every day. They are heavy! Therefore, Zhilijun try to choose plastic lunch boxes because they are lighter than glass and stainless steel lunch boxes!

However... I heard that plastic lunch boxes are toxic when heated! ! Mothers don’t like to use them, so how do they use plastic tableware? Zhilijun broke the casserole today and asked the truth~

The picture comes from the Internet

Plastic tableware is uneven and it is time to replace it

Plastic products also have a shelf life and expire Afterwards, the plastic will age, become discolored, and become brittle. If you find that the plastic box you are using has turned yellow or is no longer transparent, you should replace it as soon as possible. Therefore, there are always people on the Internet who say, "When plastic lunch boxes are used for a long time, the inside will become uneven, and the missing part may be eaten by others." Don't believe it~ Therefore, consumers must pay attention to plastic products shelf life. At the same time, aging plastic may release substances that may be harmful to the human body. As for the "life" of a plastic lunch box, it depends on personal use and cleaning methods. The shelf life of most plastic products is generally about three to five years. If used frequently, it is better to replace it in one to two years.

The picture comes from the Internet

These foods cannot be placed in plastic lunch boxes

The bubbles in carbonated drinks (soda, cola, etc.) will affect the sealing ability of the plastic lunch box Loss, foaming food, fermented food, hot food, etc. will reduce the sealing performance of the plastic lunch box. Please try to avoid storing such food in the plastic lunch box.

When used in a microwave oven, if the food contains a lot of oil and sugar, the plastic lunch box will deform when the temperature rises rapidly. Therefore, it is best to use a special box for microwave ovens to heat the above foods.

The picture comes from the Internet

Is it toxic to heat plastic tableware?

We first need to know what is added to plastic lunch boxes? Yes, there is a substance called plasticizer. Plasticizers can enhance the flexibility of plastics, making them easier to process and plasticize. They have been widely used in industry. Therefore, plastic products can easily release plasticizers after heating. Currently, the commonly used plasticizers in the market include DBP, DEHP, DINP and DIDP, etc.

Each plastic has its own heat resistance limit. Among materials used for food, polypropylene (PP) is currently the most heat-resistant, which can withstand 140°C, followed by polyethylene (PE), which can withstand 110°C. ℃, while polystyrene (PS) can only withstand heat up to 90 ℃. Plastic lunch boxes for microwave ovens currently on the market are mainly made of PP or PE. If the temperature exceeds their heat resistance limit, plasticizers may be released. Therefore, long-term heating of plastic lunch boxes at high temperatures to reheat food should be avoided. .

This is how you use plastic tableware!

It is best to heat only water-rich foods such as porridge and soup in plastic lunch boxes. Meat foods, including high-sugar foods, are best served in porcelain or glass containers when heating them in the microwave.

The picture comes from the Internet

If plasticizers are used in food containers and food packaging materials, they must not come into contact with fatty foods and infant foods.

Even microwave plastic tableware that has passed the standard test is only recommended for use under 700W and short-term heating conditions, unless the product is marked for cooking or has obtained other higher-requiring international certifications. , can be used under more stringent conditions. 700W is roughly equivalent to the mid-range firepower of a microwave oven. Generally, the instruction manual has the output power corresponding to each firepower level. Short-term heating refers to heating for 2 to 3 minutes and cannot be used for cooking cooked food.

Babies who like to use plastic tableware must pay attention to the usage regulations! Mr. Zhili hopes that everyone is healthy, so that Mr. Zhili can rest assured~

(Author: Expert from China Chemical Society)

Original work, please indicate the source for reprinting: Knowledge is Power WeChat public account "Knowledge is power" (ID: knowledge-power)