Not long ago, Beijing Tongren Hospital admitted more than 70 patients from a Beijing company. Some of them were flushed, some were nauseated and vomited, and some were flustered. The doctors were informed that they had consumed the canteens at noon. Braised squid. After symptomatic treatment, the patient's symptoms were quickly controlled. The doctors judged that the patients may have consumed stale eel and caused food poisoning.
Most of the fish that cause histamine poisoning are histamine-rich fish, mainly blue-skinned red-fleshed fish from marine fish such as tuna, saury, horse mackerel, sardines, blueliner, golden threads, and squid. Squid and so on. When the fish is not fresh or corrupt, free histidine in the fish produces histamine under the action of decarboxylase, and when histamine accumulates to a certain amount, human food can cause poisoning. Some experts believe that due to the autolysis of the fish itself, it is increasingly deepened, causing it to degenerate, resulting in a large number of decomposed amines, which form histamine after decomposition, especially marine migratory fish (such as carp), the enzyme activity of the body is stronger, In order to meet the needs of a strong metabolism, the histamine content is even more. Many seafood products are rich in histidine, and there is no problem with the freshness. However, once the freshness is bad or it deteriorates, the content of histamine and other substances will greatly increase.
Histamine poisoning is characterized by rapid onset of disease. The incubation period is usually within 1 hour, the shortest is only 5 minutes, and the longest is only 4 hours. The main symptoms are: flushing, dizziness, headache, palpitation, pulse speed, chest tightness, and respiratory distress. Some people may also have conjunctival hyperemia, dilated pupils, blurred vision, bloated face, lip swelling, and tingling of the tongue and limbs. Nausea, nausea, vomiting, abdominal pain, urticaria, flushing, blood pressure drop, etc.
A common feature of the blue-skinned red-fleshed fish is that the meat is very delicious, and therefore it is hard to eat on the table, and the resulting food poisoning occurs from time to time. For example, in April 2002, an incident of food poisoning occurred in Shenyang, 53 people were admitted to the hospital and 9 were seriously ill; in May 2006, more than 20 villagers in several villages in Hengshui, Hengshui, etc. Fish causes food poisoning.
Prevention of histamine poisoning caused by fish can be started from two aspects: one is to make a good purchase, and the other is to make a good meal.
When buying sea fish, one must look and two must touch. Do not buy fish whose fishy eyes are bright red and the color of the fish is not fresh. If you find that the abdomen of fish is not complete, there is no need to purchase if there is a break or dew; if you feel fish by hand, it is not hard enough and lacks flexibility. buy. In addition, such fish should be refrigerated or frozen when sold, and should not be purchased if it is not refrigerated or frozen.
To maintain the freshness of the fish, cook it in time after purchase. When cooking fish, add some vinegar to help reduce the sensitizing ingredients. On the other hand, some necessary measures can be taken during cooking. For example, before cooking squid (the squid and squid are very similar in appearance, the two are commonly known as squid and all are sea fish), they should go Internal organs (containing a large amount of histidine), and then washed, cut into sections, soaked in water for 4 to 6 hours, can reduce the amount of histamine by 44%, and then add the appropriate amount of cranberry or red fruit when cooking, histamine can be reduced by 65%.
In addition, people with allergies should not eat such fish.
Attachment: Several blue-red fish