Tableware use precautions
Copper tableware Many people now use copper tableware, copper pots, copper spoons, copper hot pots, etc. On the surface of copper tableware, some blue-green powder is often seen, which is called copper rust. It is an oxide of copper and is non-toxic. However, for the sake of cleaning, it is best to polish the surface of the copper tableware with sandpaper before loading the food.
Porcelain tableware porcelain was once recognized as a non-toxic tableware, but in recent years there have been reports of poisoning of porcelain tableware. It turns out that some of the beautiful outerwear (glaze) of porcelain tableware contain 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 the food comes into contact with the tableware, the lead may overflow the surface of the glaze and mix into the food. Therefore, those ceramic products with thorny, spotty, uneven enamel or even cracks should not be used as tableware. In addition, most of the porcelain binders contain high levels of lead, so it is best not to use them as tableware. When selecting porcelain tableware, use the index finger to gently slap on the porcelain. If it can make a crisp, squeaky sound, it indicates that the porcelain embryo is delicate and burnt well. If the sound is dumb, it is porcelain damaged or porcelain. The embryo is inferior.
Enamel tableware enamel products have good mechanical strength, strong, not easy to break, and have good heat resistance, can withstand a wide range of temperature changes. The texture is smooth and clean, and it is not easy to be contaminated with dust, and it is clean and durable. The disadvantage of enamel products is that they are often cracked and broken after being hit by an external force. The outer layer of the enamel product is actually a layer of enamel, containing a substance such as aluminum silicate. If it is damaged, it will be transferred to the food. Therefore, when purchasing enamel tableware, the surface is required to be smooth and flat, the enamel is uniform, the color is bright, and there is no visible powder and embryo phenomenon.
The biggest advantage of wooden tableware bamboo and wood tableware is that it is convenient to take materials and has no toxic effects of chemicals. But their weakness is that they are more polluted and moldy than other tableware. If you do not pay attention to disinfection, it is easy to cause intestinal infectious diseases.
Plastic Tableware At present, the commonly used plastic tableware is basically made of polyethylene and polypropylene. This is a non-toxic plastic approved by the health department of most countries. The sugar boxes, tea trays, rice bowls, cold water bottles, and milk bottles on the market are all such plastics. However, polyvinyl chloride, which is similar in structure to polyethylene, is a dangerous molecule. A rare hepatic hemangioma has been found, which is almost associated with people who are frequently exposed to polyvinyl chloride. Therefore, when using plastic products, be sure to pay attention to what is the raw material? When there is no product manual at hand, the following methods can be used to identify: plastic products that have a smooth feel, are flammable when fired, and have yellow flame and paraffin smell when burned. It is non-toxic polyethylene or polypropylene. Any plastic that feels sticky, flame-resistant, burns with a green flame, and has a scent of scent is polyvinyl chloride, which cannot be used as a food container. Do not choose bright plastic tableware. According to tests, the release of heavy metal elements such as lead and cadmium in the color pattern of some plastic tableware exceeds the standard. Therefore, try to choose plastic tableware that has no decorative patterns and is colorless and tasteless.
Iron tableware: Generally speaking, iron tableware is non-toxic. However, iron is prone to rust, and rust can cause nausea, vomiting, diarrhea, upset, poor appetite and other diseases. In addition, it is not advisable to use iron containers for cooking oil, because the oil is stored in the iron for too long and is easily oxidized and deteriorated. At the same time, it is best not to use iron containers to cook foods and beverages rich in tannins, such as juice, brown sugar products, tea, coffee, etc.
Aluminum tableware: non-toxic, light and durable, good quality and low price, but aluminum accumulates too much in the human body, has the effect of accelerating aging, and has a certain adverse effect on people's memory. Aluminum tableware should not be used to cook acidic and alkaline foods, and should not be used for long-term meals and long-term salty foods.
Glass tableware: clean and generally do not contain toxic substances. However, glass tableware is fragile and sometimes "mold". This is because the glass is eroded by water for a long time, and it is harmful to human health. It should be washed off with an alkaline detergent.
Stainless steel tableware: beautiful and light, easy to use, corrosion-resistant and rust-free, it is favored by people. Stainless steel is made of iron-chromium alloy mixed with nickel, molybdenum and other metals. Some of these metals are harmful to human body, so they should be used. Be careful not to hold salt, soy sauce, vinegar, etc. for a long time, because the electrolyte in these foods reacts with the stainless steel for a long time, so that harmful substances are dissolved.
Iron and aluminum tableware should not be used together. Since aluminum and iron are two metals with different chemical activities, aluminum and iron can form a chemical battery when water is present. As a result, more aluminum ions enter the food. Bring more harm to human health.
Melamine tableware, also known as melamine tableware, melamine dish, is made of melamine resin powder heated and pressed, and a kind of tableware similar to porcelain made by processing with resin as raw material is firmer than porcelain, not brittle, and color Bright, smooth finish. It is safe, hygienic, non-toxic and tasteless, and is widely used in the fast food industry and children's catering industry.
Couple tableware, as the name suggests, is a pair of tableware, exclusive couple's tableware, which captures the idea of ​​seeking witnesses between modern couples, and thus creates a tableware that expresses love, which is practical, beautiful and unique.
Disinfecting tableware refers to tableware that has been subjected to special methods to kill pathogenic microorganisms for disinfection.
Do not choose to paint chopsticks. The paint contains toxic substances such as lead and cadmium.
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