There is a substance in pineapple called bromelain, which is an allergic substance and can cause allergic reaction, that is, pineapple disease. Symptoms include diarrhea, abdominal pain, vomiting, dizziness, numbness in the mouth and tongue, itching all over the body, and severe allergic reactions such as dyspnea and shock.

Salt water can destroy the allergic substances of pineapple prion and make it lose its toxicity to human body. Of course, it is useless for people with allergies. So people with allergies should not eat pineapple, just a small amount.

Soak pineapple in salt water, it tastes more delicious. Soaking pineapple can not only remove allergic substances, but also decompose organic acids in pineapple, making pineapple sweeter. In addition, oxalic acid in pineapple hinders the scarcity of calcium and iron in human body, and salt water can neutralize acidity and reduce the harm to human body.