Source: Xiao Li, who is neither humble nor arrogant
Drinking containers, common items in daily life, contain a wealth of life details and emotional value. Its design, its composition, its colours, and even the objects it carries give it its own charm and purpose. In terms of design, the drinking containers are diverse, including round, square, oval and various special-shaped designs, providing a combination of visual beauty and practicality. In terms of material selection, the scope of drinking containers is wide, covering glass, porcelain, plastic, metal, etc., each material has its own unique properties and aesthetic value. This diversity not only satisfies functional requirements, but also enriches the user experience.
There are so many cups on the market, which one is the safest to drink?
First of all, plastic drinking glasses are one of the common choices, and their type can be distinguished by the number identification on the bottom of the cup, which ranges from 1 to 7, with higher numbers representing higher quality materials. In particular, the cup numbered 5 (polypropylene, PP) is suitable for microwave use due to its good heat resistance and chemical stability. In contrast, cups numbered 7 (polycarbonate, PC) should not be used to hold hydrothermal fluids or be exposed to sunlight for extended periods of time to avoid the release of harmful BPA. It should be noted that although the surface of the plastic cup is smooth, it is easy to hide dirt and dirt, and once the cup body is damaged, it should be replaced immediately.
Secondly, the enamel cup, known for its metal liner and enamel appearance, is not only rust-resistant but also fall-resistant. However, the enamel may contain harmful metals such as chromium and lead, especially when used in acidic environments or high temperatures, which may dissolve and pose a health threat.
Next, ceramic cups are loved for their beauty and versatility, and can be divided into three categories: unglazed, underglaze, and overglaze. Unglazed and underglaze ceramic cups are generally safe and harmless, while overglaze colored ceramic cups may release harmful substances during use, so you need to be cautious when choosing.
In addition, due to the stability of the silicate composition, the glass does not produce harmful substances during use, and it is easy to clean, making it difficult for bacteria to attach. Modern borosilicate glass also solves the problem of glass being prone to breakage in the past, making it a very safe choice.
Finally, thermos mugs are often used to keep water warm, but it is not recommended to store acidic liquids such as juice, coffee, etc. for a long time. When cleaning stainless steel thermos cups, strong oxidizing detergents should be avoided to prevent chemical reactions.
Choose the right water cup and drink the right water
In order to ensure the safety of drinking water, the need to boil water before drinking cannot be ignored. On the mainland, water coming directly from the tap is not suitable for direct drinking. This is because although the water has been purified, including the addition of disinfectants such as chlorine, it may contain substances and microorganisms that are harmful to humans. Drinking unboiled tap water for long periods of time may cause digestive problems and increase the risk of disease. Boiled water can effectively remove harmful substances such as chlorine, while reducing the content of bacteria and pathogens, reducing the risk of teratogenic and carcinogenic substances, and is more suitable for daily drinking.
Regarding the temperature of drinking water, it is recommended to keep it at around 65°C. Water above this temperature can cause damage to the stomach and esophageal mucosa, which may increase the risk of gastritis, stomach ulcers and even stomach cancer in the long term. Therefore, the right drinking temperature can not only ensure the taste, but also avoid damage to the digestive tract.
In addition, avoiding drinking water that has been stored for too long is also an important health recommendation. In overnight water or water that has not been changed for a long time, the bacterial content increases significantly, and nitrite and other substances that are harmful to the human body may be produced. Therefore, it is advisable to change drinking water regularly to keep the water fresh and ensure the safety of drinking water.