As soon as spring comes, pineapples are already on the shelves in many fruit shops. Pineapple although delicious, but eat too much is easy to allergy. Many people after eating, the corners of the mouth red, and even dizziness, rash, so what is going on? Does pineapple also cause allergy?
Overeating may cause allergies
Pineapple is rich in nutrition. It contains bromelain, which can decompose protein, dissolve fibrin and blood clot blocked in tissues, improve local blood circulation, eliminate inflammation and edema; the sugar, salt and enzyme contained in pineapple have diuretic effect, which is beneficial to patients with nephritis and hypertension. However, bromelain, glycosides and hydroxytryptamine, which can digest protein in pineapple, can lead to allergic reaction.
Glycosides are organic substances, which have certain irritation to human skin and oral mucosa. Therefore, after eating raw pineapple, the mouth will itch; hydroxytryptamine is a nitrogen-containing organic matter, which has a strong vasoconstriction and blood pressure rise effect, and the direct reaction after eating more is headache.
Pineapple contains' bromelain ', which is a kind of protein hydrolase. After being refined, it has a strong function of decomposing fibrin and blood clot, which is a kind of medical drug.
A small amount of bromelain in pineapple is broken down by gastric juice after eating into the stomach. However, there are a few people allergic to this enzyme, 15 to 60 minutes after eating abdominal pain, nausea, vomiting, urticaria, headache, dizziness and other symptoms. Severe still can produce dyspnea and shock.
Soak in salt water before eating
Bromelain allergy is a kind of "quick type" allergy, which is rapid and strong. It often occurs in a few minutes or more minutes after re exposure to allergens, resulting in a series of clinical manifestations.
This kind of allergic reaction is the pathological immune reaction of tissue damage and dysfunction caused by the re exposure of the sensitized body to bromelain.
Generally speaking, when people with allergic constitution are exposed to bromelain for the first time, as an allergen, it enters the human body through various ways to stimulate the body to produce corresponding antibodies. This specific antibody will quickly bind to the mast cells in the body tissue and the eosinophils in the blood, making the body in the sensitized state.
When the sensitized body is exposed to bromelain again, bromelain will immediately bind to the antibodies attached to the surface of the cells, causing a series of allergic reactions. Because pineapple contains' bromelain 'is a substance that causes allergic reactions. Brine or boiling water can destroy bromelain and remove this allergic substance.
The most effective way to prevent pineapple allergy is to peel the pineapple, cut it into pieces or pieces, and boil it in boiling water. At 100 ℃, more than 90% of bromelain was destroyed, glycosides could also be destroyed and eliminated, and hydroxytryptamine was dissolved in water.
If we want to keep the fresh taste of pineapple, we can soak the sliced or diced pineapple in salt water for about 30 minutes, and then soak it in cold boiled water to remove the salty taste, which can also achieve the desensitization effect.
In addition, patients with ulcers, kidney disease, coagulation dysfunction should not eat pineapple, fever and eczema scabies should not eat more.