Frozen silver fish detection

1. Frozen silver fish, naturally curved, with a natural surface color and no obvious abnormalities; The body surface is particularly bright, with a straight shape and possible signs of formaldehyde immersion. 2. Silver fish with a pungent odor may contain organic chemical reagents such as formaldehyde or be contaminated with other substances. 3. The high-quality silver fish has a transparent color and is similar to the body surface, making it easy to break; Silver fish containing formaldehyde has a hard outer body that is not easily broken when squeezed. Nutritional benefits: 1. Silver carp is a fish rich in calcium, high protein, and low fat. Its meat is delicate, boneless, without intestines, scales, or thorns, and can be used as a supplement for babies. 2. According to modern nutritional analysis, silver carp is rich in nutrients and has the characteristics of high protein and low fat. 3. The dried silver carp has higher nutritional value, with the highest calcium content, ranking first among the fish in the group. According to research by American scientists, consuming high calcium foods can effectively prevent the occurrence of colorectal cancer. Therefore, silver carp is a rare anti aging and cancer food. Pay attention to "one look, two sniffs, and three touches" when choosing. Due to the extremely high living conditions of silver fish, they cannot survive in polluted water and die immediately upon discharge. Improper storage can easily lead to deterioration. Therefore, the first way to distinguish "formaldehyde silver fish" is to look at: normal frozen fresh silver fish or frozen silver fish after thawing, which is naturally curved and has a milky white surface color; The silver fish soaked in formaldehyde has an abnormally bright surface [8u58 specialty website techan. 8u58. com], with a particularly strong and swollen physique, and a straight and erect body. Secondly, there is smell: normal silver fish has no odor, fishy odor, or particularly irritating odor; Silver fish with a pungent odor may be contaminated by chemicals such as formaldehyde. Finally, touch: The body of a normal silver fish is soft, and the flesh of the fish is easily broken when pressed with fingers; Silver fish containing formaldehyde will stiffen and have elasticity when gently squeezed, but with slight force, the fish body is prone to fracture

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