Many people are accustomed to using disposable paper cups when they are out. Experts remind that when using disposable paper cups, one should first rinse them with boiling water and then discard the water, so that harmful substances can fully volatilize.
Food packaging experts suggest that when using disposable paper cups, it's best not to drink the first cup of water. Instead, rinse the cup with boiling water, wait for four to five minutes, then discard the water to allow harmful substances in the paper cup to fully volatilize. Due to the strong permeability of fluorescent powder and ink, which can contaminate food, disposable paper cups or instant noodle boxes should not be heated in a microwave oven.
Experts also remind consumers that when purchasing paper cups, first check if the outer packaging is sealed and that the packaging bag is not damaged. Cups with poor seals are susceptible to contamination, and their hygiene cannot be guaranteed. Second, check if the product packaging lists the manufacturer's name, address, production date, expiration date, etc. Third, check if there is any residual fluorescent whitening agent on the inner wall of the paper cup. This fluorescent substance can become a potential carcinogen after entering the human body. Fourth, pinch the paper cup to see if it has good cup body stiffness and strength. If it deforms or is damaged with slight force, its quality is substandard.
In addition, the disposable paper cups we commonly use are generally divided into two types: cold drink cups and hot drink cups. Each has its own purpose, and using the wrong type can pose a health risk.