Why wooden chopsticks turn black after long use

　　Generally, when chopsticks are used for 3-6 months, the color will become darker or lighter with the use frequency. Prolonged use of disposable chopsticks will reproduce various molds, which may lead to infectious diarrhea, vomiting and other diseases. Severely moldy chopsticks will reproduce "aflatoxin". The substance is classified as a kind of carcinogen by the World Health Organization. It can damage human and animal liver tissues. It has been widely determined that it can induce liver cancer.

　　Don't use moldy chopsticks. If you really want to use them, soak them with hot water and some detergent, rinse them clean, and then boil them in boiling water for more than 15 minutes and dry them in the sun. Chopsticks usually use disinfection cupboards to disinfect, so they don't have to be moldy.

　　First, wash all chopsticks; Secondly, pay attention to cleaning the chopstick box on time. The chopstick box is the one with good ventilation and large mesh without causing the chopsticks to fall; Third, frequently bask in the sun and disinfect. Fourth, don't take out all the chopsticks. Just put a few pairs of chopsticks in common use. In this way, the chopstick box has a large space, which is conducive to ventilation, and then it won't get moldy.

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