Food safety is very important to everyone, so now people pay more and more attention to food safety. Many people think it is unsanitary to eat out, especially in those stalls outside, so they try to buy food and cook by themselves. However, in the process of buying food, food hygiene and food safety problems still occur from time to time. Because some vegetables may have some pesticide residues on them, and so on. These will also affect people's health. Nowadays, there is a news circulating on the Internet. When a citizen of Chongqing bought chives, he found something blue on it, which would fade after rubbing. Is this dyed onion?

1. When people buy onions, the color will fade. What's going on here?

It is understood that because Chongqing citizens found something blue at the root after buying shallots, they originally wanted to use napkins to wipe them before they were inspired. As a result, they found that shallots would fade last year. So he called a reporter and demonstrated the process. Later, the reporter also turned against many stores selling shallots in the vegetable market, and later found that all the shallots at home had this problem. And it is known that there are such problems in other places.

Second, why do the bought shallots fade when they are wiped? What exactly is the erased thing?

Later, people asked the staff of relevant departments, and the staff responded that these blue things may be anhydrous copper sulfate, a chemical raw material used in pesticides and the like.

Third, can shallots like this be eaten?

Many people are worried about whether such shallots can be eaten. According to the staff of relevant departments, shallots like this should be washed as many times as possible to dilute the copper on them.

As for Chongqing citizens who buy shallots, they will fade when they rub them. Is this the topic of dyeing shallots? what do you think? Please leave a message in the comments section.