Pineapple is alkaline.

But according to the taste or pH, pineapple is an acidic food. However, this is not the standard for judging the acidity or alkalinity of food. The acidity or alkalinity property of food is determined by the acidity or alkalinity of the final metabolite after metabolism by the organism.

Pineapple is rich in calcium, potassium, magnesium and other components, after metabolized by the body, the final metabolite is alkaline, therefore, pineapple is an alkaline food.

The principle of eating pineapple in salt water:

The pineapple prion enzyme contained in pineapple pulp is the main ingredient leading to pineapple poisoning, and after soaking pineapple in salt water, it can effectively destroy the pineapple prion enzyme. After soaking the pineapple in salt water, it can effectively destroy the internal structure of "pineapple prion enzyme" that leads to allergy, thus losing the ability to make people allergic and losing the toxicity for some body types.

Soaking the pineapple in salt water and then eating it can also make part of the organic acid contained in it decompose in the salt water, removing the acidic flavor and making the pineapple taste sweeter. So, before you eat the pineapple, peel off the skin, cut into slices and soak in salt water for a period of time, you do not have to worry about pineapple prion allergy.