First, the precautions for eating seafood
1. Uncooked seafood contains bacteria.
The bacteria in seafood are mainly Vibrio parahaemolyticus, which has strong heat resistance and can only be killed above 80℃. In addition to bacteria brought by water, there may be parasitic eggs in seafood, as well as bacterial and viral pollution caused by processing. Generally speaking, boiling water takes 4-5 minutes to completely sterilize. Therefore, we must be careful when eating unheated seafood such as "drunken crab", "raw sea urchin" and "sauce-fried seafood", and we must ensure the freshness and hygiene of fish when eating sashimi.
2. Drinking tea after eating seafood leads to stones.
The reason why you should not drink tea after eating seafood is similar to the reason why you should not eat fruit. Because tea also contains tannic acid, it can also form insoluble calcium with calcium in seafood. Eating seafood before or after eating seafood will increase the chance of combining calcium with tannic acid. So it is best not to drink tea when eating seafood. Similarly, an interval of more than 2 hours is also the best.
3. Don't eat chilled shrimp for nothing.
Any seafood can only be made into steamed and cooked dishes in a highly fresh state. Aquatic seafood, unlike meat, contains many low-temperature resistant bacteria, and protein decomposes very quickly. If it is kept in the refrigerator for a long time, the bacterial content of shrimp will increase, and protein will be partially denatured, producing amine substances, which will not reach the taste, flavor and safety of live shrimp in any case, and it is certainly not suitable for boiling. But chilled shrimps can be fried or fried at high temperature, and they can also be delicious.
4. Seafood vitamin C and food poisoning.
All kinds of seafood, such as shrimp, crab, clam and oyster, contain the chemical element arsenic. Generally, the content is very small, but the increasingly serious environmental pollution may make the arsenic content in these animals reach a higher level. The valence state of arsenic contained in shrimp is pentavalent. Under normal circumstances, pentavalent arsenic is harmless to human body. Theoretically, high doses of vitamin C (more than 500mg of vitamin at a time) and pentavalent arsenic will be converted into toxic trivalent arsenic (arsenic) through complex chemical reactions, and trivalent arsenic can cause human poisoning when it reaches a certain dose.
There are many toxins in dead shellfish.
The bacteria carrying capacity of shellfish itself is relatively high, and protein decomposes quickly. Once it dies, it will breed a large number of bacteria and produce toxins, and the unsaturated fatty acids contained in it are also prone to oxidative rancidity. Stale shellfish will also produce more amines and free radicals, which pose a threat to human health. After buying live shellfish, you can't keep them at home for too long. Cook them as soon as possible. People with allergies should pay special attention, because sometimes allergic reactions are not caused by seafood itself, but by substances in the process of protein decomposition of seafood.
6, seafood beer with gout.
It is best not to drink beer when eating seafood. Seafood such as shrimps and crabs will form uric acid after metabolism, and excessive uric acid will cause gout, kidney calculi and other diseases. If you eat a lot of seafood and drink beer at the same time, it will accelerate the formation of uric acid in the body. Therefore, when eating a lot of seafood, don't drink beer, otherwise it will have a negative impact on your health.
7. Eating seafood and fruit together will cause abdominal pain.
Seafood such as fish, shrimp and crab are rich in nutrients such as protein and calcium. Fruit contains more tannic acid. If you eat fruit immediately after eating seafood, it will not only affect the human body's absorption of protein, but also make calcium in seafood combine with tannic acid in fruit to form insoluble calcium, which will stimulate the gastrointestinal tract and even cause abdominal pain, nausea, vomiting and other symptoms. It is best to eat at intervals of more than 2 hours.
8. Try not to eat shrimp heads and fish heads.
According to professionals, only when you eat 50 medium-sized apples or 30 pears or 10 oranges or eat more than 3 kilograms of green leafy vegetables at a time will you take in a large dose of vitamin C. If you go through the heating cooking process, the vitamin C in food will be greatly reduced. Therefore, it is not dangerous to eat fruits or vegetables while eating seafood, as long as it does not exceed the above amount. Metal elements are easy to deposit on the head of seafood. Try not to eat shrimp heads and fish heads.
Second, the taboo of eating seafood.
1, beer
Seafood such as shrimp and crab will form uric acid after metabolism, and beer also contains extremely high uric acid. You should know that uric acid is too high can cause gout, kidney calculi and other diseases. Therefore, eating the two foods together will accelerate the formation of uric acid in the body, which will lead to our chances of getting sick.
2. Fruit
Eating crabs and pears will cause gastrointestinal discomfort, and eating crabs and persimmons will also do harm to our spleen and stomach. Why? The reason is that seafood such as crab and shrimp are rich in nutrients such as protein and calcium, while most fruits contain tannic acid. When we eat seafood and then fruit, the calcium in seafood combines with tannic acid, which will form substances that the human body cannot absorb, thus causing abdominal pain, nausea, vomiting and other symptoms. When protein is combined with tannic acid, it will form protein's condensation and precipitation, which will affect the human body's absorption of protein and damage our stomach.
3. tea
Tea contains a lot of tannic acid, which will form indigestible calcium with calcium in seafood. If you eat a combination of seafood and tea for a long time, stones will grow in your body. Here, Bian Xiao suggested taking a rest for two hours after eating seafood before drinking tea.
4, vitamin C.
Many seafood products, such as shrimp, crab, oyster and so on. , all contain arsenic. Of course, generally speaking, the arsenic content in seafood is very small. Like what is contained in seafood, we can also become five-grade arsenic, which is harmless to our human body. However, when we consume a large amount of vitamin C, the fifth-order arsenic will react with vitamin C and eventually become the third-order arsenic, which is what we usually call arsenic. Therefore, when eating seafood containing a lot of vitamin C, it will lead to human poisoning.