Which of the common tableware materials in the kitchen is healthier?
First of all, stainless steel
Stainless steel tableware is a safe tableware in our impression, but stainless steel also has defects. Stainless steel tableware contains soy sauce, salt, vinegar, etc. It takes a long time, because these condiments contain a lot of electrolytes, and stainless steel will react with these condiments for a long time, releasing toxic elements. Stainless steel tableware is not resistant to strong alkaline or strong oxidizing chemicals. These strong electrolytes will react with metal elements in tableware, thus corroding stainless steel tableware and releasing harmful substances.
Second, plastic.
In the tableware market, plastic products compete with glass products because of their light weight and non-fragility. However, the health hazards and safety problems of plastic tableware have always been the focus of attention. Many plastic tableware have beautiful colorful shells on their surfaces. If the content of lead, cadmium and other metal elements in the pattern exceeds the standard, it will cause harm to human body. Generally, there is a protective film on the surface of plastic products. Once this film is cut by a hard instrument, it will release harmful substances. The surface of inferior plastic tableware is often not smooth and harmful substances are easy to leak out. Therefore, consumers should try to choose plastic tableware with no pattern, colorless and tasteless, smooth surface and strong hand feeling.
Third, ceramics
Ceramic tableware has a variety of shapes, delicate and smooth, bright colors and easy cleaning. Most families buy tableware. However, the colored glaze on the ceramic surface may become a health killer. Lead, mercury, radium and cadmium in glass are all harmful elements to human body. The production methods of ceramic tableware are divided into three types: over-glaze color, in-glaze color and under-glaze color. Over-glaze colored ceramics are made by pasting colored paper made of pigments on the glaze surface or painting directly on the surface of products with pigments, and then firing at low temperature. Because the firing temperature can't reach the melting degree of the glaze layer, the flower surface can't sink into the glaze. Touching the glazed porcelain with your hand, you feel that the flower surface has obvious concave and convex feeling.
Four. enamel
Enamel is a kind of safe tableware, which is more resistant to corrosion than steel, higher temperature than plastic, more durable than ceramics, and more importantly, more beautiful. Enamel is the outer glaze of metal products, which is fired at a high temperature of 1500-2000 degrees Celsius. Surface glaze has the same stability and beauty as ceramics, but it is lighter and more durable than ceramics.
Verb (abbreviation for verb) glass
Glass tableware is a kind of food container with surface treatment. Glass tableware is clean and sanitary, and contains no toxic substances. The disadvantage of glass tableware is that it is fragile and easy to burst when used improperly; Glass tableware is clean and hygienic, and does not contain toxic substances, but sometimes it will be "moldy". Because the glass has been corroded by water for a long time, sodium silicate in the glass reacts with carbon dioxide in the air to generate white carbonic acid crystals, which are harmful to human health and can be removed by alkaline detergent when used.