Usually, the chopsticks used at home are mostly made of wood, and they are not replaced regularly. The color becomes darker after a long time. So what is the reason why the color of the chopsticks is getting darker? What harm does the color of the chopsticks get darker? Let's take a look at it.
Many people do not have the concept of regular replacement of wooden chopsticks that are commonly used at home. They think that chopsticks will be cleaned every day after use and put into disinfection cupboards for disinfection. Therefore, some chopsticks have not been replaced for many years. This is wrong.
Causes and harms of the darker color of chopsticks
When the ordinary chopsticks are used for 3-6 months, the color will become darker or lighter with the frequency of use. There is often water on it, and there is oxygen in the air. After a long time, the wood is rotted, so it gets darker. This is a blackening of mold reproduction pollution, and disposable chopsticks that are used in excess will breed various molds.
Since there is no paint, the surface of the chopsticks is rough, and the food is infiltrated when eating, and there is also the taste of the food, which cannot be washed.
In order to prolong the service life, the surface of the wooden chopsticks sold on the market has been coated with a layer of edible paint - raw lacquer, so that the surface of the chopsticks is not easily attached by bacteria. However, after the wood chopsticks are used for a long time, the surface paint is easy to fall off or break, and the sawdust is loose, which provides a living space for the bacteria to breed. At the same time, household chopsticks are washed with water for a long time and placed in the cabinet, resulting in high water content of the chopsticks, providing a very good growth environment for bacterial reproduction.
Household chopsticks used in excess use have particularly high water content. Because household chopsticks are frequently used and washed with water for a long time, they are easy to become hotbeds for bacterial growth, such as yellow grape, E. coli, and the like. Severely moldy chopsticks will breed "aflatoxin", a substance that has been widely recognized to induce liver cancer. Long-term placement of chopsticks in the cabinet may increase the chances of deterioration of the chopsticks.
Causes and harms of the darker color of chopsticks
How to do chopsticks darker?
If the chopsticks are used for a long time, the color of the chopsticks becomes darker or lighter and needs to be replaced. The change in the color of the chopsticks indicates that the nature of the material itself must change, and the long-term accumulation of bacteria is the main factor in the color change. Therefore, when using chopsticks, it is necessary to observe whether the surface of the chopsticks is attached with spots, especially mildew. If there are non-bamboo or wood-colored spots on the chopsticks, it means that the chopsticks may have been mildewed and should be replaced in time.
Bamboo and wooden chopsticks should be replaced once every 3 to 6 months, and chopsticks should be used for more than 6 months. Although aflatoxin is indeed a cause of liver cancer, the premise is that a certain dose needs to be reached, so it is not necessary to be too nervous. Of course, in order to reduce this part of the risk, it should be replaced or disinfected regularly, to maintain hygiene to prevent illness from entering the mouth.
If the chopsticks are bent or deformed, they look very moist or smell sour, they are contaminated or expired and cannot be used.
The above is the reason why the chopsticks become darker and the details of the hazards. I hope I can help you.
By Best Chopsticks
Reference:
https://medium.com/@86export/the-difference-between-alloy-chopsticks-and-ordinary-chopsticks-5bbf2c2676eb
https://bestchopsticks.kinja.com/the-difference-between-alloy-chopsticks-and-ordinary-ch-1838059649?rev=1568272317850
https://bestchopsticks.blogspot.com/2019/09/long-term-use-of-stainless-steel.html
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