Advantages and disadvantages of tableware of various materials:
1. Ceramic tableware: It is a great invention in China and is used the most.
The production methods of ceramic tableware are divided into three types: on-glaze colour, under-glaze colour, and in-glaze colour. What are on-glaze, in-glaze, and under-glaze colours? The surface of porcelain is smooth and bright, why? This is because it is covered with a layer of enamel. As the name suggests, on-glaze colour is the painted pattern attached to the glaze surface, in-glaze colour is the painted pattern melted into the middle of the glaze, and the under-glaze colour is the painted pattern on the underglaze ceramic body. We see that the patterns are also painted on the surface of the tableware, some are smooth and flat, some have a protruding sense, and there is also a clear sense of unevenness when touched by hand. On-glaze colour is to paint the pattern on the burned porcelain body, and then fix it by high-temperature heating. If the craftsmanship is not excellent, the on-glaze colour tableware will wear out or peel off after a period of time. In addition, some on-glaze pigments contain harmful metals such as lead and cadmium. These harmful elements are easily dissolved when cooking acidic food, which is harmful to health. Therefore, when purchasing daily-use porcelain, it is best to purchase advanced technology and use environmentally friendly pigments. For daily use of porcelain, you can also choose ceramic tableware with underglaze colour and underglaze colour.
2. enamel tableware:
It is resistant to acid and alkali corrosion and has stable chemical properties. However, enamel tableware is made of iron products fired with enamel, and enamel contains compounds such as lead silicate, which are harmful to the human body.
3. Wooden tableware:
Economical and practical, but easy to be polluted and difficult to clean, except for wooden panels, chopsticks, etc. Wooden tableware has been used less frequently.
4. Bamboo tableware:
Bamboo chopsticks are the most used, which are economical and practical, and do not waste wood, but they should be kept dry, otherwise, they are prone to mould. Especially in the south, in the rainy and humid season, you should pay attention to washing them and putting them in a ventilated place.
5. Plastic tableware:
The advantages are lightweight, beautiful appearance, not easy to break, and low price, and are deeply loved by people. However, plastic tableware is mostly made of polyvinyl chloride and other polymer materials with additives. If the monomer vinyl chloride is not removed cleanly or the additives are used improperly, it will also endanger human health. Non-toxic plastic tableware is made of raw materials such as polyethene, polypropylene and melamine. It is made of a melamine (melamine) formaldehyde resin as the main raw material, adding an appropriate amount of pulp cellulose fillers and colourants and other auxiliary materials. It is non-toxic, tasteless, and acid and alkali resistant.
6. Glass tableware:
Clean and hygienic, generally free of toxic substances. But glass cutlery is fragile and sometimes "mould". This is because the glass is eroded by water for a long time, and the sodium silicate in the glass reacts with carbon dioxide in the air to form white carbonic acid crystals, which are harmful to human health and should be washed off with alkaline detergents frequently.
7. Iron tableware:
Generally speaking, iron tableware is non-toxic. However, it should be noted that iron utensils are prone to rust, and rust can cause nausea, vomiting, diarrhoea, upset, poor appetite and other symptoms; in addition, it is not suitable to use iron containers to hold cooking oil, because the oil is stored in iron utensils for too long. Easily oxidative deterioration.
8. Aluminium tableware:
Aluminium products are widely used because of their lightness, durability, high quality and low price. Although there is no complete scientific research data to prove the relationship between aluminium tableware and human health, most experts believe that excessive accumulation of aluminium in the human body will accelerate human ageing and be harmful to health. Therefore, when using aluminium tableware, do not scrape it. If you scrape off aluminium chips, it is best not to eat them. In addition, aluminium tableware should not be cooked with acidic and alkaline foods, otherwise, aluminium will be dissolved in large quantities.
9. copper tableware:
The appearance is gorgeous, the colour is like gold, and it is very stylish, such as a copper hot pot, which is very popular among people. The trace copper elements dissolved when cooking food in a copper pot are beneficial to the human body. However, after the copper is rusted, "patina" (basic copper acetate) and blue alum (copper sulfate) can be produced. Both verdigris and blue alum are poisonous and can cause nausea, vomiting and even poisoning. Therefore, copper tableware with patina should be removed before use.
10. stainless steel tableware:
Beautiful, light and durable, wear-resistant and not rusted, it is very popular among people. Stainless steel is an iron-chromium alloy mixed with nickel, molybdenum, titanium and other metals. Some of the metals are not good for the human body. Therefore, when using it, you should pay attention not to store salt, soy sauce, vinegar, etc. for a long time, because these foods contain The electrolyte of the stainless steel that will react with the stainless steel for a long time so that the harmful substances will be dissolved out.
1. When purchasing ceramic tableware, it is best to choose tableware with a white inner wall without on-glaze pigment. Newly bought ceramic tableware can be soaked and boiled with 4% vinegar water, which can remove harmful substances. When purchasing ceramic tableware, choose products with fine processing, dense appearance, uniform lustre, smooth surface, and uniform and solid glaze layer. It is best to choose products with advanced technology and environmentally friendly pigments.
2. Do not choose brightly coloured plastic tableware. According to testing, the colour patterns of some plastic tableware contain lead, cadmium and other heavy metal elements exceeding the standard. Therefore, try to choose colourless and odourless plastic tableware without decorative patterns. In addition, when buying instant bowl noodles, pay attention to the mark on the bottom of the bowl. If the mark is "PS" (polystyrene) or "PP" (polypropylene), you can use it with confidence. The foamed plastic bowl contains a foaming agent. After soaking in hot water, the harmful substances in the foaming agent will dissolve and enter the human body with food. In addition to being non-degradable, disposable foam plastic lunch boxes also have the above problems, so they are prohibited from being used.
3. Don't choose paint chopsticks. Painted chopsticks, while highly decorative, are not desirable from a health standpoint. Because paint contains lead, cadmium and other toxic substances. People are better off using bamboo or wooden chopsticks that are unpainted and hygienic.
4. Non-stick pans, rice cookers, etc. are not suitable for dry burning. The inner wall of the non-stick pan and rice cooker is a plastic coating made of polytetrafluoroethylene. When heated above 400°C, the coating may release the toxic gas tetrafluoroethylene. Therefore, people must not let non-stick pans and rice cookers burn empty.
5. Iron and aluminium tableware should not be used together. Although iron tableware is safe, if it is used in conjunction with aluminium tableware, it will bring greater harm to the human body. Since aluminium and iron are two metals with different chemical reactivities, when water is present, aluminium and iron can form a chemical battery, which results in more aluminium ions entering the food. Therefore, tableware such as aluminium spoons, aluminium shovels and iron pans should not be used together.
There are many kinds of tableware, each with its pros and cons. It is generally believed that aluminium pots should be used as little as possible, stainless steel pots should be used for cooking, iron pots and copper pots should be used for cooking, and casseroles should be used for soups and stews.
if you are interested in titanium tableware fork, chopsticks, spoon, or knife, you can send us the email: zhangjixia@bjygti.com
