Soaking pineapple in salt water for 1-2 days will not destroy the nutritional components of pineapple.

Pineapple also contains oxalic acid, which will affect the body's absorption of calcium and iron. Soaking with salt will also neutralize its acidity and reduce possible harm to the body.

Pineapple also contains glycosides, bromelain and 5- hydroxytryptamine, which are irritating to skin and oral mucosa, and some people are naturally allergic to pineapple. After eating pineapple 15 minutes to 1 hour, symptoms such as abdominal pain, nausea, vomiting, diarrhea and allergic symptoms such as headache, dizziness, skin flushing and even shock poisoning will occur. Cut the pineapple into slices or pieces and put it in salt water before eating.