In fact, pineapple is soaked in salt water to inactivate bromelain in pineapple. Because this enzyme may cause allergic reaction of consumers, abdominal pain and diarrhea, headache and dizziness, skin flushing, itching all over, numbness of limbs and mouth, and even a series of allergic symptoms such as dyspnea and shock suddenly appear from 15 minutes to 1 hour after eating pineapple.

Salt water can destroy the allergic structure of "bromelain" and make it toxic to individual physique people. Therefore, when eating pineapple, you can peel the pineapple skin first, then cut it and soak it in salt water to reduce the accident of bromelain allergy.

Pineapple (scientific name: Ananas comosus), pineapple is the common name of pineapple? , is one of the tropical fruits. There are more than 70 varieties, which is one of the four famous fruits in Lingnan.

Pineapple originated in the Amazon River valley of Brazil and Paraguay in South America, and was introduced to China from Brazil in the16th century. Has spread to the whole tropical region. Its edible part is mainly composed of inflorescence axis with increased meat quality and flowers arranged spirally around it. Flowers are usually not strong, and persistent flowers are surrounded by lobes in a cavity in which atrophied stamens and styles are hidden. The fiber of leaves is very tough and can be used in textile, rope making, netting and paper making.

Pineapple and pineapple are biologically the same fruit. In the market, pineapple and pineapple are different kinds of fruits: after pineapple is peeled, there are "internal thorns" that need to be removed; However, there is no "internal thorn" after the pineapple is peeled, and there is no need to cut the ditch with a knife.