With the development of society, all aspects of our industries are developing very fast. Our tableware industry is also the same, and it has its own development trend. So do you know which materials of tableware cannot be used? For many kinds?
1. The copper tableware has gorgeous appearance and golden color, which is very grand. The small amount of copper that is dissolved when cooking food in a copper pot is beneficial to the human body. However, “patina” and blue vitriol (copper sulfate) can be produced after copper is rusted. Both patina and blue alum are toxic substances that can cause nausea, vomiting and even poisoning. Therefore, it must not be used for copper tableware with patina.
2. The glass tableware is clean and hygienic, free of toxic substances. However, glass tableware will “mould”. This is because the glass is corroded by water for a long time, and the sodium silicate in the glass reacts with the carbon dioxide in the air to form white carbonic acid crystals. The glass tableware is harmful to human health, so it can be removed with alkaline detergent during use.
3. Aluminum tableware is widely used because of its light weight, durability, high quality and low price. Although there is no complete scientific research to prove the relationship between aluminum tableware and human health, most experts believe that excessive accumulation of aluminum in the human body will accelerate the aging of the human body, which is harmful to health. Therefore, do not scrape with a knife or spatula when using aluminum tableware. It is best not to eat the scraped food mixed with aluminum scraps; in addition, aluminum tableware cannot cook acidic and alkaline foods, otherwise a large amount of aluminum will dissolve.
4. Stainless steel tableware is beautiful, light and durable, wear-resistant and not rusty, and is quite popular among people. Stainless steel is made of iron-chromium alloy infiltrated with trace metal elements such as nickel, molybdenum, titanium, and manganese. These trace elements are harmful to the human body. Therefore, you should pay attention to it when using it. Do not store salt, soy sauce, vinegar, etc. for a long time, because these foods Electrochemical reaction will occur if the electrolyte is in contact with stainless steel for a long time, so that harmful substances will be dissolved out. Do not use stainless steel utensils to cook traditional Chinese medicine, because traditional Chinese medicine contains a variety of alkaloids, organic acids and other ingredients. After heating, it will electrolytically react with stainless steel, making the medicine ineffective, and some even produce toxic compounds, which are harmful to the human body.
5. Plastic tableware
Currently considered safe plastic meals include polyethylene, polystyrene, polypropylene plastic products and so on. When purchasing and using, you must pay attention to confirm which type of plastic the plastic belongs to. Recycled plastics, plastics with dark pigments, and non-food plastics must not be used for holding or packaging food, otherwise, it may be harmful to the human body. Cause poisoning.