Porcelain tableware: don't choose overglaze

Porcelain tableware has a variety of shapes and designs. It is meticulous and clean, bright in color and easy to clean. It is the first thing to buy tableware in most homes. However, the colorful glaze on the surface of porcelain may become a murderer of 陶瓷杯色彩 physical and mental health. Lead, mercury, radium, cadmium, etc. in colored glaze are basically elements that are harmful to the body.

The practice of porcelain tableware is divided into three types: over-glaze, mid-glaze and over-glaze. On-glaze colored porcelain is made of decal paper with color paste, or immediately painted on the surface of the product with color paste, and then baked at ultra-low temperature, because the baking temperature does not reach the level of melting of the glazed surface, so the flower surface Don't sink into the glaze, touch the on-glaze colored porcelain with your hands, and feel that the flower surface has a significant three-dimensional effect. The firing temperature of the in-glaze colored porcelain will melt the glaze, the color paste can sink into the glaze, and it will be covered by the glaze after cooling. The surface of the product is smooth and there is no obvious three-dimensional feeling to the touch. All the decorations of the on-glaze colored porcelain are carried out on the porcelain blank. After being glazed, it is fired at a high temperature once, and the flower surface is covered by the glazed surface, which looks bright, flat, and sensitive to touch.

The key to hazardous metal materials comes from the color paste on the glaze. The radioactive substance radium has low destructive power of white blood cells. Cadmium, lead and mercury are all heavy metals exceeding the standard. Cadmium and benzene can cause liver or other internal organs to be poisoned. Mercury can cause liver and kidney hardening. When over-glazed tableware is used for a long time to hold foods with high organic content such as vinegar, wine, fruit juice, vegetables and fruits, the heavy metals such as lead in the tableware will always be mixed and pile up with the food. Cause diffuse metal poisoning.

In order to better control costs, some small ceramic manufacturers purchase cheap raw materials with high lead and cadmium content and unstable characteristics. In the production process, the total area of ​​the decoration design is too large, the baking temperature is insufficient, or the staff's processing technology is negligent, etc., which will cause the total amount of lead mixed in the ceramic products to not meet the requirements. Even some individuals, private enterprises, in order to make more profit, randomly reduce the baking time or reduce the baking temperature, and use the old-style baking furnace that completely relies on the experience of the employees, which severely limits the quality of porcelain tableware.

Laminated glass tableware: "crystal products" have many hidden dangers

Laminated glass meal has the characteristics of high strength, stable organic chemical function, smooth and clean surface, and environmental protection. Laminated glass tableware is cleaned daily, free of toxic substances.

Crystal tableware is a highly threatening lead pollutant. Because the lead monoxide content in crystal crafts reaches 20-30%, it will not cause lead poisoning symptoms if it is used to hold water. The longer the amount of melting is greater. Similarly, when crystal utensils are used to contain foods, especially Coca-Cola, pure honey, fruit juice and acidic foods, lead positive ions are also prone to produce soluble lead salts that are ingested by the body with drinks or foods, seriously threatening physical and mental health. Therefore, crystal products are called "beautiful murderers" by biologists.

Imitation porcelain tableware should be cleaned properly

The scientific name of melamine tableware is melamine tableware, which is made of melamine resin powder heated and pressurized to mold. Because of its excellent washing resistance characteristics; the product surface has the characteristics of leveling, non-toxic, odorless, resistant to fall, and automatic elimination of electric guts. In recent years, it has been widely used in tableware, daily daily necessities and other aspects. However, at this stage, the market is flooded with fake and shoddy porcelain tableware, which poses a great safety hazard to the health of customers. At the same time, if the standard imitation porcelain tableware is operated incorrectly, it will also affect our physical and mental health.

Because of the uniqueness of the plastic molecular formula of melamine tableware, for safety reasons, it is not necessary to contain acid-base, oil-soluble chemicals as much as possible. Imitation porcelain tableware should not be used in the oven, nor should it be used under conditions with a large temperature difference, otherwise it will easily lead to cracking. For the cleaning of imitation porcelain tableware, you must use a softer towel. Never use towels such as wiping cloths and washing to clean the surface of the tableware, because the wiping cloth will wipe the surface of the tableware, making it more susceptible to environmental pollution. As far as possible, it is not necessary to put the imitation porcelain tableware in the pot to steam the food. Due to the high temperature, the toxic substances that may be contained in the color table or tableware materials are likely to be precipitated.

Plastic tableware: "colorful" beautiful and unhealthy

In the tableware sales market, plastic products have the advantages of light weight and not easy to break, which are comparable to FRP products. However, the hidden dangers of health and safety of plastic tableware and the problem of safety factor have always been the focus of our attention.

Many plastic tableware have beautiful colors on the surface. If the lead, cadmium and other chemical elements in the pattern design exceed the standard, it will cause harm to the body. There is a protective film on the surface of general plastic products. Once this film is scratched by a hard tool, harmful substances will be released. The surface of fake and inferior plastic tableware is usually uneven, and harmful substances are easily exposed. Therefore, customers should choose plastic tableware that has no patterns, colorless, tasteless, smooth surface and firm touch as much as possible.

Use less non-stick frying ingredients

Non-stick pan products can be divided into cooking pots, frying pans, cooking pots, milk pots, etc. according to their application functions. Before using the non-stick pan for the first time, peel off the label, wash and wipe with tap water, apply a thin layer of food oil for maintenance, and then clean it before use. Use high-temperature-resistant wooden frying spoons when cooking to prevent sharp shovel or metal materials from harming the surface of the non-stick pan. The heat conduction of non-stick kitchen utensils is even, and only need to use moderate to low heat in application, you can cook delicious food. When choosing popular, there must be ingredients or water in the pot. If it is burned in an empty state or the temperature is around 300°C, the coating of the non-stick pan is likely to be damaged and hazardous ingredients will be released. Its reliable application temperature should not exceed 250 ℃, and the frying temperature is generally very high, so it cannot be used for frying ingredients, and at the same time, it cannot be used for cooking acidic fruits. After application, wait for the temperature to drop slightly, and then wash with cold water, not directly with cold water. When it is difficult to remove stains, you can use boiling water and detergent to clean it up with sponge. Do not use rough sandpaper or metal material balls to wipe it with all strength.

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