The fat content of hairtail is higher than that of common fish, mostly unsaturated fatty acids, and its carbon chain is longer, which can reduce cholesterol.

The scales and silver oil layers of hairtail also contain 6- thioguanine, which is beneficial to the adjuvant treatment of leukemia, gastric cancer and lymphoma.

Regular consumption of hairtail has the effect of nourishing five internal organs;

Hairtail is rich in magnesium, which has a good protective effect on cardiovascular system and is conducive to preventing cardiovascular diseases such as hypertension and myocardial infarction. Regular consumption of hairtail also has the effects of nourishing liver and blood, nourishing skin, caring hair and keeping fit.

Disadvantages:

The discoloration of canned food is mainly caused by the change between the contents of canned food and the inner wall of canned food or the raw materials of canned food, especially the canned vegetables. Canned fruit in glass bottles will also change color if exposed to the sun for a long time. This discoloration will not only affect the flavor of food, but also reduce its use value.

Extended data:

Factors affecting product quality:

1, canned rust

There are two major disadvantages to tin cans. One is the corrosion of the outer surface of the tank, and the other is the corrosion of the inner wall of the tank. The corrosion of the outer wall of the tank is mainly caused by excessive moisture in the air. When the corrosion is not serious, it has no effect on the contents of the tank; In severe cases, it will cause perforation and air leakage in the tank wall, which will deteriorate the food in the tank.

Inner wall corrosion mainly refers to the result of chemical interaction between the inner wall of cans and the contents, which makes the coating on the inner wall of cans fall off, produces iron spots and makes the contents have a metallic taste; If the corrosion is serious and concentrated at one point, it will also cause perforation and air leakage, thus affecting the quality of canned food.

2. Acid corrosion of canned food

It means that bacterial pollution leads to rancidity, but the surface of canned food does not produce abnormal manifestations such as greasy hearing and deformation. This kind of can is not easy to distinguish from the normal can, and it can only be identified by the abnormal change of smell and taste or the rancid taste after opening the can.

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