1. Silver tableware:
Silver tableware, silver ionizes extremely small amounts of silver ions in water, which has a bactericidal effect. In many ancient costume films, people also use silver needles to test whether the food is poisonous. However, silver tableware is a luxury after all, and copper bowls have a similar effect. It is best not to use aluminum bowls, use too much to be careful of mental decline.
2. Wooden tableware:
First of all, wooden tableware is a pure natural product with abundant resources and a wide range of materials. And wood, which is 100% degradable. With the non-degradability of plastic cutlery and the luxury of silver cutlery, wooden cutlery is a safe and affordable option. There are also wooden cutlery that can be made of hardwoods of any shape, such as birch and maple.
However, wood is an absorbent, porous material that soaks in moisture and bacteria. For this reason, wooden cutlery is unhygienic and not suitable for long-term use, and wooden cutlery made from certain types of wood, such as cedar or cypress, may benefit from strong odors and oleoresin. Wooden tableware is a by-product of wood construction, imported wood or recycled wood that may be exposed to chemicals during the washing or manufacturing process. Also, wooden cutlery is sanded and smoothed for safe use. Drying wood, however, it can develop chips or cracks is a safety hazard if not stored properly, and the risk of splitting is really rare. But when comparing wooden cutlery, silver and plastic are far safer.
Here we talk about the harm of disposable chopsticks, because in many fast food restaurants and even restaurants, disposable chopsticks are the most common, and it is also very harmful to us:
①. Damage to the respiratory function: The disposable chopsticks are fumigated with sulfur during the production process, and the ship will release SO2 when it is heated during use, which will erode the respiratory mucosa;
②. Damage to the function of the digestive tract: The disposable chopsticks are bleached with hydrogen peroxide during the production process. The hydrogen peroxide is strongly corrosive and is harmful to the oral cavity. The esophagus and index finger cause corrosion to the stomach and intestines; talc powder is used in the grinding process, which is not clean and accumulates slowly in the human body, which will cause people to suffer from gallstones;
3. Bacterial infection: The shelf life of sterilized disposable chopsticks is up to 4 months. Once the shelf life is over, it is likely to bring Staphylococcus aureus, Escherichia coli and hepatitis;
④. Disposable chopsticks are likely to have a “greenhouse effect”. Because of the vicious circle, if there are fewer trees, CO2 will increase, the atmosphere will thicken, and the heat will be difficult to open three times, resulting in a “greenhouse effect”.
3. 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 mildew, especially in the south.
4. Glass tableware:
Clean and hygienic, generally free of toxic substances. But glass cutlery is fragile and sometimes “mold”. 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 the health of the hot body.
5. Iron tableware:
Generally speaking, iron tableware is non-toxic. However, it should be noted that ironware is easy to rust, and rust can cause nausea, vomiting, diarrhea, 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 for too long. Easily oxidative deterioration.
6. Stainless steel tableware:
Beautiful, light and durable, wear-resistant and not rusted, popular among people. Stainless steel is made of iron-chromium alloy mixed with nickel, molybdenum, titanium, manganese and other metals. Some of the metals are harmful to 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 will react with the stainless steel for a long time, so that the harmful substances will be dissolved out. Do not use stainless steel tableware to cook traditional Chinese medicine, because traditional Chinese medicine contains a variety of alkaloids, organic acids and other ingredients. After heating, it will react with the ingredients in stainless steel, which will make the medicine ineffective, and some even produce toxic compounds.
7. Enamel tableware:
Resistant to acid and alkali corrosion, stable chemical substances. However, enamel tableware is made of iron products fired with enamel, which contains compounds such as lead silicate, which are harmful to the human body.
8. Plastic tableware:
Its advantages are that it is light, beautiful, not easy to break, cheap, and 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. Infinite plastic tableware is made of raw materials such as polyethylene, polypropylene and melamine. Melamine plastic is a kind of thermosetting plastic. It is made of melamine formaldehyde resin as the main raw material, adding appropriate amount of pulp fiber filler and coloring agent and other auxiliary materials. .
9. Ceramic tableware:
China’s great invention, the most used. The production methods of ceramic tableware are divided into three types: on-glaze color, under-glaze color, and in-glaze color. So what’s the difference between the three? Why is the surface of porcelain smooth and bright? This is because it is covered with a layer of enamel. As the name implies, on-glaze color is the painted pattern attached to the surface of the glaze, in-glaze color is when the painted pattern is integrated into the middle of the glaze, and under-glaze color is the painted pattern on the underglaze ceramic body. We can 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 color 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 color tableware will wear out or peel off after a period of use. And 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 choose daily-use porcelain with advanced technology and environmentally friendly pigments.