Disadvantages of canned food: it contains preservatives. In order to prolong the shelf life, preservatives should be added to canned food during the production process, which is harmful to liver and kidney if eaten frequently. It also contains additives. In order to make the canned food more delicious, spices, pigments, artificial flavoring agents and other additives will be added during the processing, which is harmful to human health if eaten frequently.

Benefits: Opening a can is a delicious dish, which can save users a lot of busy, environmentally-friendly and energy-saving green food in the kitchen. The packaging of the can is degradable and has no pollution to the environment. Moreover, the can does not need to be refrigerated at low temperature, and can be stored at room temperature for a long time, which can save a lot of electricity.

Users need to pay attention to eating canned food.

Users are advised to check whether the canned food has expired and whether there is rust, especially the phenomenon of fat listening. If the lid of the can bulges, it means that the anaerobic bacteria in the can proliferate and produce acid and gas, and the food in the can has deteriorated and can never be eaten again. ?

Need to pay attention to before eating canned food, if conditions permit, it is best to return to the pot properly, and add some favorite condiments, which will more arouse the appetite.

Canned food is rich in nutrition and easy to deteriorate. Therefore, after the can is opened, it is best to eat it all at once. If it can't be eaten all at once, it should not be put for a long time to avoid microbial invasion and pollution. Canned fruit is easy to be contaminated by lactic acid bacteria and alcoholic bacteria, resulting in rancid taste and alcohol ignorance. Don't eat the spoiled leftover canned food. ?

Reference to the above content? Baidu Encyclopedia-Canned Food, People's Network-Can eating canned food all your life ensure that you are nutritious enough not to get sick?