Why does coffee have to be drunk in 10 minutes?

Many foreign studies have also shown that coffee has a certain effect in the treatment and prevention of diseases. Although there are many benefits of drinking coffee, if you don't pay attention to the details, it will make a loophole for health risks. The BBC recently published an article reminding that brewed coffee should be finished as soon as possible.

If coffee is exposed to the air for a long time, the fungi that pervade the air will attach to the coffee cup in a very short time, and some of the organic ingredients in these fungi are the main culprits that cause allergic reactions. Aldington Yak, a professor of molecular bioengineering at the University of Lancaster in the UK, conducted an experiment in which a cup of freshly brewed coffee was put in an ordinary office. Indoor air pollution mainly includes bacteria, fungi (including fungal spores), pollen and organic components of organisms. After drinking one or two sips of coffee and shaking, coffee stains will form on the mouth and wall of the cup within 10 minutes, and these coffee stains will quickly absorb fungi in the air, thus contaminating the coffee.

In terms of taste, coffee contains a substance called tannin, which is a yellowish powder that can easily blend into the water. if you soak well but do not drink it in time, the color of the coffee will become darker and the taste will not be strong enough. Therefore, after the coffee cup is made, it is best to finish it within 10 minutes.

In addition, when drinking coffee, it is best to use a coffee maker, pour as much as you drink, and cover the lid of the coffee pot; if it is a single cup, it is best to finish it in a short time, or brew it in a cup with a lid. Need to pay special attention to, after drinking coffee, be sure to wash the coffee stains clean, otherwise it is more likely to breed bacteria. If you have a lot of coffee stains on your cup, the easiest way to clean it is to use toothpaste and salt. Rinse the cup with water, then rub it back and forth with dry salt or toothpaste, and then rinse with clean water.