There is no need to soak them in salt water before eating pineapples. You can just eat them when you buy them. If you want to soak them in water, it's perfectly fine. If you soak them, you have to be careful about how long you soak them. It's best to soak them for 15 minutes, up to about half an hour. If you soak them for a long time, they may harbor some bacteria.

The second reason for soaking in salt water

Pineapples need to be soaked in salt water before eating because they contain a kind of pineapple protease. After consumption, it will break down the proteins in our body and irritate the mucous membranes in the mouth. In severe cases, headaches, vomiting and other adverse symptoms will occur. Soaking it before eating it will destroy this substance so that you won't feel uncomfortable after eating it.

Salt water soaking should also be controlled in half an hour. If it is too long, it will not only cause bacteria, but also reduce the taste. After soaking in salt water, rinse it with water for a better flavor.