Will the hottest plastic bottled drinks release to

2022-08-07
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Will plastic bottled drinks release toxins

date: Author: Source: Wen/Xiaoyuan

recently, food safety has attracted more and more attention, but the containers containing food and beverages should not be underestimated. Many people are used to buying bottled drinks to quench their thirst. However, according to research, plastic beverage bottles will release heavy metal antimony, which is not conducive to human health. What should we pay attention to when drinking plastic bottled drinks

it has become a habit for many people to buy bottled drinks to quench their thirst. However, in recent years, some scholars have found that the plastic beverage bottle will release the heavy metal antimony into the beverage. With the increase of soaking time, the amount of antimony released will also increase. Is it safe to drink bottled drinks? How are these drink bottles made

not only polymers but also various additives

plastic beverage bottles are formed by esterification of terephthalic acid [C6H4 (COOH) 2] and ethylene glycol [C2H4 (OH) 2]. To produce esterification reaction, the two must be dissolved in organic solvent first. In order to accelerate the reaction, antimony trioxide (Sb2O3) is generally used as catalyst to reduce the energy, temperature and pressure required for the reaction

for bottled beverages such as mineral water, fruit juice, green tea, etc., the hardness of the bottles is different, which is mainly related to the molecular weight of the polymer and the arrangement of pet. In the 1980s, there was no fixed number of how many pet plastic beverage bottles were connected, and their molecular weight could range from thousands to millions. Generally speaking, the longer the molecular connection, the harder the material. In addition, the tidier the pet is arranged, the harder the bottle is

the material of plastic beverage bottles is colorless and transparent. Some manufacturers add color to make the bottle have color for modeling design. In addition, chemical substances such as anti light agents, antioxidants and stabilizers will be added to increase their service life

will antimony be released

in 2006, Professor williamshotyk of Germany found that the content of heavy metal antimony would increase from 360ppt (one trillion) to 630ppt after plastic beverage bottles were placed for three months. Relevant experts said that the plastic beverage bottles do release heavy metal antimony, which comes from the catalyst antimony trioxide used in the manufacturing process. Because it can not be recovered 100% under the current technology, there must be traces of antimony left. For this reason, a few manufacturers have used safer titanium oxide as catalyst. However, if the beverage is stored in a low temperature environment, the released antimony content should be controlled within a safe value. However, if the beverage is exposed to the sun for a long time, pet may release more antimony due to decomposition. Toxicology experts say that a large amount of antimony can cause headache, nausea and other symptoms, while the amount of 630ppt is quite low for the human body, so it is difficult to determine what harm it will do to the human body. At present, there are no cases of poisoning due to drinking bottled drinks

will the plasticizer be released

the plasticizer phthalate will be added to the process of some plastic products. It is an environmental hormone that will affect biological physiology and even cause cancer. Is this compound added to plastic beverage bottles? Experts pointed out that plasticizers are used to improve the ductility and flexibility of polymers. They are mainly added to fresh-keeping films, PVC plastic films or elastic plastics. Plastic beverage bottles do not contain phthalates. As long as their molecular structure has not changed, they can be reused without heating, excessive light or microwave

is it safe to hold rice wine

some commercial rice wine is also packed in plastic drink bottles. Experts say that alcohol is easy to dissolve antioxidants, anti light agents and other organic substances. These additives usually dissolve into rice wine in two days. Therefore, drinking rice wine in plastic bottles has certain risks

the simplest way to safely drink bottled beverages or reuse plastic beverage bottles is to avoid exposure to light and heat during storage. Once the anti light agents and antioxidants are consumed, pet will begin to decompose or react with other substances, and various poisons in pet will be released

links how to interpret plastic material numbers

many plastic bottles are marked with triangle marks with numbers 1-7, representing plastics of different materials. Is the larger the number, the safer? What should we pay attention to when using them to hold food

relevant experts said that the concept that the larger the number, the safer is wrong. 1-7 respectively refer to the first to seventh types of plastics, of which the most problematic is the third type of polyvinyl chloride (PVC). In addition to adding chemicals in the manufacturing process, it can not be recycled, and dioxin and chlorinated compounds will be produced during combustion, which has a great impact on the environment. Therefore, many countries have reduced or banned its use

the sixth kind of polystyrene (commonly known as polystyrene, PS) has poor chemical stability and can be dissolved by a variety of organic solvents. Many chemicals will be added during the manufacturing process to improve the stability, and these additives may be eaten into the stomach if they are not careful

the seventh type of plastics refers to the plastics other than the first to the sixth types, among which the most problematic one is polycarbonate (PC). The raw material of PC is bisphenol A (BPA). The biggest problem is not the chemical substances added during manufacturing, but the material itself will release bisphenol A. some high-efficiency cleaners will even dissolve bisphenol A from PC. if the container surface is scratched, bisphenol A will be dissolved into the beverage according to its damage degree. Bisphenol A is an environmental hormone. In animal experiments, it has been found that as long as 3ppb (i.e. 1 kg of water contains 3 micrograms) of bisphenol A will cause cell abnormalities. Experts said that bisphenol A is known to reduce sperm count, damage brain nerves or abnormal prostate cells in mice; A recent survey by the American Medical Association found that people with high BPA content in urine have a higher risk of cardiovascular disease or diabetes than ordinary people. However, this report is only a preliminary investigation. Why there is such a result needs further study

experts say that the first type of plastic is pet, which can be used only if it is protected from light and high temperature. Among the seven types of plastics, the second, fourth and fifth are safer. The second type is high density polyethylene (HDPE), and the fourth type is low density polyethylene (LDPE), which is polymerized from C2H4. HDPE has higher hardness than LDPE, relatively stable structure and higher safety. The fifth type is polypropylene, which is C3H6 polymer. These three kinds of polymers do not contain oxygen atoms and are not easy to react with sunlight and air. Therefore, they have stable chemical structure and long service life. Even if the surface is scratched, they will not release poisons. The color of these three kinds of plastics is white and slightly transparent. If color additives are added in the manufacturing process to change the color, they should be avoided as much as possible. As for the safety of plastics, as long as we pay more attention to the above points, we can avoid most of the poisons

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