Ceramic dinnerware: Is celadon dinnerware healthy and how to choose?
Is healthy, the principle of selection is:
1. Look at the raw materials of ceramics
The raw materials of ceramics include mud (green body raw material), glaze (glazed raw material) and paint (decorative raw material). The raw material of the green body is generally kaolin or clay, which is basically safe because it is a natural clay or mineral without chemical addition.
In the glaze, there is a layer of glass body (glaze) covering the paint, which may contain heavy metal elements. And on-glaze color, because its paint will directly contact food, it is easy to release heavy metal elements at high temperature, which will cause harm to the human body.
In most cases, the paints are low-cost chemical materials, which are likely to contain heavy metal elements such as lead and cadmium.
2. Look at the firing of ceramics
In addition to seeing whether the paint is in direct contact with food, it also depends on the firing temperature. Because in the process of high temperature calcination, the harmful substances disappear after chemical reaction.
The glaze is the glass body formed by the high temperature processing of the glaze, and the heavy metal elements will basically not remain after such high temperature treatment (about degrees Celsius).
The color baking temperature of the glaze color is only about 10 degrees, which cannot meet the "high temperature" conditions mentioned above. In this case, the safety depends on the quality of the paint. The better the quality, the lower the lead and cadmium content.
The glaze is the glaze formed after high temperature, which is basically the above high temperature and is basically not toxic. However, the paints are basically low-cost chemical materials, which will contain some heavy metals. You can touch the place where the pattern is with your hand. If the feel is obvious, it is on the glaze, and the feel of the underglaze color is smooth, and the patterns are all under the glass.
Not all ceramic dinnerware is safe. Not all ceramic dinnerware is safe. Long-term use of some dinnerware can cause chronic heavy metal poisoning, causing damage to skin, teeth, eyes, brain, bones, and fertility. These harmful substances are mainly heavy metals such as lead and cadmium contained in ceramic dinnerware. The degree of damage mainly depends on the dissolution amount of these heavy metals in use and the absorption amount by the human body.
Precautions:
1. Try not to use ceramic dinnerware with large patterns inside.
2. Never use ceramic dinnerware with flowers inside to eat foods that are too acidic or too salty.
3. Ceramic dinnerware that has been placed for a long time should be washed and wiped with hot water before use.
4. After cleaning the ceramic dinnerware, try to dry or dry it for storage.
5. Never use ceramic dinnerware with flowers inside to store food for a long time.
6. Do not use ceramic dinnerware with flowers inside to cook food at high temperature.
Post time: May-17-2022