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How often do we change the utensils?

Bamboo, wood utensils should be replaced every 6 months.
The bamboo utensils are very poplar with us because they are natural and non-toxic, But the chopsticks made od bamboo are easily bacteria-infested. If they are not disinfected properly , intestinal disease may appear. The life of bamboo life is usually six months to a year. Household chopsticks are best disinfected weekly. Put the chopsticks into the boiling water for 30 minutes or in the microwave for sterilization for 2-3 minutes. When there is cracking, change of color or shape of the chopsticks, they should not be used any more.

Plastic utensils should be replaced once a year.
Plastic utensils are not easy to break so they can be seen frequently from the dining table. But once they expires, they are likely to become fragile and aging. Harmful small molecules may separate out, becoming the dangerous factors to induce cancer. If you find scratches on the surface of the plastic tableware or there is strong pungent "plastic smell", then they should be change immediately.

For metal utensils, one the coating get damaged, they should be replaced.
A lot of people think metal utensils are safe and can be used for life, which is actually incorrect. Take the the most common iron pan for example, once the surface starts to fall off, the rusts in the pot will cause nausea and vomiting, diarrhea and poor appetite, etc. Enamel products can easily be cracked, the aluminum silicatebe smeared on enamel utensils can be transferred into the food. Stainless steel is made from iron chrome, nickel, and molybdenum etc. These metals also contain harmful substances. So, when the coating is not in good condition, the utensils should be replaced immediately.

When the ceramic utensils have cracks, they should be changed.
The beautiful colored glaze of chinas contains lead. When there is crack, the lead may come out and get into the food. Tableware life and maintenance are inseparable. For ceramics and metal utensils, we can extend its service life,through good maintenance. But if rupture, deformation and porcelain falling appear, they should retire.

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