1. Commonly used plastic tableware is basically made of polyethylene and polypropylene. This is a non-toxic plastic recognized by the health departments of most countries, but polyvinyl chloride, which has a molecular structure similar to polyethylene, is a dangerous molecule. A rare liver hemangioma has been found, which is almost related to people who are often exposed to polyvinyl chloride. .
2. Generally speaking, iron tableware is non-toxic. But ironware is easy to rust, and rust can cause nausea, vomiting, diarrhea, upset, poor appetite and other diseases. Iron containers are also more suitable to contain oils, because oils are easily oxidized and deteriorated when stored in irons for too long.
3. Porcelain used to be recognized as non-toxic tableware, but in recent years there have been reports of poisoning of porcelain tableware. It turns out that the beautiful coat (glaze) of some porcelain tableware contains lead. If the temperature is not enough when the porcelain is burned or the glaze ingredients do not meet the standard, the tableware may contain more lead. When food comes into contact with tableware, lead may overflow the surface of the glaze and get mixed into the food. Therefore, those ceramic products with prickly, spotty, uneven enamel or even cracks are not suitable for tableware.
4. Stainless steel tableware is beautiful, light and easy to use, corrosion-resistant and non-rusting. It is very popular. Stainless steel is made of iron-chromium alloy mixed with nickel, molybdenum and other metals. Some of these metals are harmful to the human body, so when used It should be noted that do not store salt, soy sauce, vinegar, etc. for a long time, because the electrolyte in these foods will react with stainless steel for a long time, so that harmful substances will be dissolved.
5. Aluminum tableware is non-toxic, lightweight, durable, good in quality and low in price, but aluminum accumulates in the human body too much, has the effect of accelerating aging, and has a certain adverse effect on human memory. Aluminum tableware is not suitable for cooking acidic and alkaline foods, nor for long-term storage of meals and long-term storage of salty foods.
6. Do not use overglaze decoration when choosing ceramic tableware, especially the inner wall of ceramic tableware. It can be decorated with underglaze or midglaze. For example, blue and white is a kind of ceramic that people like to decorate with underglaze.