Everyone knows the process of making cans. Take canned fish as an example. Canned fish is a ready-to-eat canned product made of fresh or frozen fish through processing, canning, adding seasoning, sealing and sterilization. According to the different processing methods, canned fish can be divided into braise in soy sauce, tomato juice, fresh frying, steaming, smoking, oil immersion and water immersion.

Some food additives, such as preservatives, will be added during the production of canned food. Due to the management and production technology of fish raw materials, canned products have certain security risks, mainly manifested in histamine sensitization in fish raw materials and botulism caused by improper sealing sterilization. The processing flow of canned food is made up of raw material treatment, sorting, trimming, canning, sealing, sterilization and cooling. Like other foods, processing environment, machinery and equipment, processing water, shaking materials and operators may all become microbial pollution sources.

Eating canned food often is definitely harmful to your health for the following three reasons:

1. contains additives. In order to make canned food more delicious, additives such as spices, pigments and artificial flavoring agents will be added during processing, which will be harmful to human body if eaten frequently.

2. Loss of vitamins. After canning, about 10%~60% of vitamin C, 20%~80% of vitamin B, nearly 10% of vitamin P and 15%~20% of vitamin A are lost.

3. Many canned fruits contain high sugar content, which is ingested into human body as a liquid carrier, so that the absorption rate of sugar is greatly increased, blood sugar is greatly increased in a short time after eating, and the pancreatic load is aggravated. At the same time, due to high energy, it may lead to obesity.

The intake of salt should be reduced in the diet of patients with urinary system diseases, because high-salt diet is an important pathogenic factor of hypertension; Hypertension increases the risk of stroke and cardiovascular disease. Therefore, controlling salt intake is something that diabetics can't take lightly. We should reduce the intake of salt, use less seasonings such as salt and pepper when cooking, try to eat fresh food, avoid canned fish and soup, and eat less pickled food such as pickled vegetables, salted fish and salted eggs. ?

Therefore, you should eat canned food in moderation. After all, there are security risks.