Plastic water cups can be seen everywhere in life. Although plastic water cups are convenient to carry, they are often easily associated with toxic substances. Some netizens list plastic water cups as one of the 4 types of water cups that are prone to cancer. There are also rumors that the larger the number at the bottom of the cup, the safer the cup. Today’s "is it true", we have invited experts in food plastic products to distinguish the true and false of these rumors for you.
Does boiling water in a plastic cup really release toxic substances?
If it is a plastic water cup that meets the standards (national food safety standards and quality standards), there is no problem with boiling water. But in terms of plastic characteristics, plastic water cups are more suitable for holding liquids with lower temperature.
There is a triangle mark under the plastic cup (bottle) with different numbers inside. Is it true that the higher the number on the Internet, the safer it is?
According to the national standard GB/T 16288-2008 "Marking of Plastic Products", the number on the bottom of the cup is only a representation of the material. For example, 01 is PET (polyethylene terephthalate), which is used for common mineral water bottles. Containers made of materials. No. 05 is PP (polypropylene), which is mostly used to make films and food containers for microwave ovens. We recommend using this logo, mainly for recycling, and it has nothing to do with safety. There are 140 codes listed in GB/T 16288. Some materials are rarely used as food contact materials, but they can also be recycled.
It is said that BPA is an ingredient widely used in plastic cups (bottles). Long-term use of BPA-containing plastic cups can cause cancer. Is it true?
Bisphenol A is mainly found in polycarbonate (PC) materials and is not widely used in plastic cups. Plastic cups that contain or can decompose bisphenol A are harmful to infants and young children. my country's laws and regulations, as well as the laws of some countries, prohibit the use of bisphenol A in baby food containers (such as milk bottles). As to whether it affects adults and whether long-term use of BPA-containing plastic cups will cause cancer, there is still controversy in the industry. All baby bottles need to be sterilized by boiling water. High temperature sterilization of plastic baby bottles such as PP that meet the standard is no problem.
It is said that colored plastic cups contain more harmful substances. Is it true?
It cannot be generalized, and there is no problem with color plastic cups that meet the standards. The color of the plastic itself is basically colorless, white or slightly yellow. If there is color, things are added. If the added things do not meet the laws and standards, they may contain harmful substances.
Is it true that thick plastic cups are better than thin ones?
If what we mean by "good" only means that it is more conducive to food safety, thick plastic cups are not necessarily better than thin ones. The thickness is made according to the needs of use.
Is it true that mineral water bottled cooking oil releases carcinogen DEHP?
Most of the mineral water bottles are made of polyethylene terephthalate, which is made of No. 01. There is no need to add DEHP in the production process. But why DEHP is included in the test result after edible oil is installed? This reason is very complicated. Because DEHP is widely used, it is not certain where the problem occurred. DEHP itself is oil-soluble. If there is DEHP in the mineral water bottle, it is easier to release when it is filled with oil than when it is filled with water. Therefore, it is recommended not to use mineral water bottles for cooking oil.
It is said that glass and ceramic cups are the safest, is it true?
Plastic cups are prone to excessive organic matter and heavy metals, and glass and ceramic cups are prone to excessive heavy metals. The especially crystal clear glass is specially used to make works of art. It contains a high lead content, so it is not recommended to use it as a water glass. Under the same standard, it can only be said that the safety factor of using glass and ceramic cups is greater than that of plastic cups.
In addition to plastic water cups, there are also rumors that boiled milk with packaging will cause aluminum poisoning after drinking. Is it true?
It is not necessarily aluminum poisoning, but it is not very good to do so. For soft-packed milk that is kept fresh for 3 days, there is no aluminum in the material but plastic. For the paper/aluminum/plastic composite packaging with a long shelf life, there is a layer of aluminum in the middle, and the direct contact with milk is also the plastic, which will not be "aluminum poisoning" under normal circumstances. Remind everyone not to put this kind of packaged milk directly into the microwave oven to heat, it may damage the package and adversely affect human health. And from a health perspective, the pasteurized milk can be drunk directly, which will destroy its nutrients after heating.
①Try to buy plastic water cups with QS logo.
②Try to buy products of well-known brands in big shopping malls.
③Don't choose products with peculiar smell and sharp protruding cup.
④Special reminder, if the plastic cup has been used for a long time and some small cracks appear, it must be replaced in time. Because these small cracks indicate that the plastic cup material has begun to decompose, it is easy to release some small molecule products, and the small cracks are easy to breed microorganisms, which is not good for health.