Many bright and huge frozen shrimps are preserved in formalin and then soaked in industrial caustic soda, which makes them swell and absorb water and increase their weight. Then fix the color with formaldehyde to make the shrimp colorful. Good shrimp meat should be clean and complete, light blue or milky white, without peculiar smell; The inferior shrimp is irregular, soft in tissue, red in color and sour.
There are many chilled shrimps on the market, many of which are products of frozen shrimps after thawing. Be sure to pay attention when buying, if the protein in the frozen shrimp meat has been oxidized to black in the air, don't buy it.
Extended data:
The efficacy of shrimp:
1, enhancing human immunity
Shrimp has extremely high nutritional value, which can enhance human immunity and sexual function, tonify kidney and strengthen yang, resist premature aging, and treat diseases such as impotence due to kidney deficiency, chills, fatigue, soreness of waist and knees.
Step 2 pass the milk
If women have little or no postpartum milk, 500 grams of fresh shrimp, ground and hot rice wine, taken three times a day for several days, can promote lactation.
3. Relieve neurasthenia
Shrimp skin has sedative effect and is often used to treat neurasthenia and autonomic nerve dysfunction. Shrimp is a delicious food that can provide nutrition for the brain. Shrimp contains three important fatty acids, which can keep people focused for a long time.
4. Prevention of arteriosclerosis
Shrimp is rich in magnesium, which plays an important role in regulating heart activity and protecting cardiovascular system. It can reduce cholesterol content in blood, prevent arteriosclerosis, dilate coronary artery, and help prevent hypertension and myocardial infarction.
Shrimp is rich in nutrients such as protein and calcium. If you eat with fruits containing tannic acid such as grapes, pomegranate, hawthorn and persimmon, not only will the nutritional value of protein decrease, but tannic acid will combine with calcium ions to form insoluble conjugates, which will stimulate the gastrointestinal tract and cause discomfort, vomiting, dizziness, nausea, abdominal pain and diarrhea. Seafood should be eaten with these fruits at least 2 hours apart.
Baidu encyclopedia-shrimp
People's Network-Cooking Skills: Make Frozen Shrimp More Tasty. Frozen shrimp is best cooked with salt water.
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