Fish is rich in protein and various nutrients, and its acidity is very low, especially the proliferating bacteria, so it must be sterilized at115-121℃ at high temperature and high pressure. This high temperature has little effect on protein, but it will cause a lot of losses, and B vitamins will be lost. Therefore, the vitamin B 1 content of canned fish can be reduced to half of that of fresh fish, and it will be further reduced after long-term storage.
However, everything is fine. High temperature and high pressure heating softens fish bones and dissolves calcium. Therefore, the calcium content of canned fish is increased by more than 10 times, and minerals such as iron, zinc, iodine and selenium are not lost. Therefore, eating canned fish has certain significance for supplementing minerals. However, if the former fish is a deep-sea fish polluted by lead and mercury, the bones will become soft, the pollutants will dissolve, and the harm to human body will increase. Compared with tuna, shark, sea bass, swordfish, bloom, macross, squid, salmon, squid, yellow croaker, etc.
Although fish is delicious, it is a nutritious material. This is my favorite food. Eating fish can help the body develop and supplement various nutrients, while HDA can also improve intelligence, but fish is not suitable for long-term consumption. Many people are very familiar with the benefits of fish, but they don't know that it is forbidden to eat fish for a long time. Let's look at the disadvantages of eating fish for a long time. Fish is delicious, but it's easy to eat and get into these five pits.
1, now the growing environment of many fish is polluted, especially the industrial sewage on the river is very harmful. Many fish live in harsh environment and accumulate a lot of harmful substances in their bodies. Fish containing heavy metals is harmful to human health. Many unscrupulous businessmen sell the fish caught in these sewers. Long-term intake of fish will lead to various diseases of the body, which is very unfavorable to human health.
2. More and more news reports say that hormone fish and artificially fed fish can fetch a good price. In order to gain weight quickly, a lot of feed and hormone drugs are added to the milk tank, which leads to the rapid growth of fish. This is the rapid growth of fish soft meat, and it also carries many technologies. Human intake of these fish will lead to secretion disorder and premature birth, so we need to be very careful when choosing fish.
3, pregnant women can eat mercury in fish for a long time, because the fetal resistance during pregnancy is poor, and the amount of mercury in the baby will lead to fetal recovery and damage brain function. Therefore, it is suggested that pregnant women can eat fish instead of eating fish for a long time, which will adversely affect the health of babies.
4. Patients with liver cirrhosis are not suitable for eating fish for a long time. Fish contains a lot of unsaturated fatty acids, which is easy to reduce blood lipid and blood viscosity. These effects are more beneficial to patients with hyperglycemia. Patients with hyperlipidemia and cirrhosis have lower platelets.
5. There are all kinds of fish. Many sushi restaurants can eat hairy fish, and many areas have the habit of eating sashimi. Fish fillets are easy to carry bacteria or parasites. Eating sashimi for a long time will make people ingest parasites and continue to grow and reproduce in the body, which is very harmful to the body.
These are long-term hazards to the human body. Fish is rich in nutrition, but it is not suitable for long-term consumption. Be cautious about those who are sick, so as not to aggravate this situation.