Because in the process of turning red, the physical properties of shrimp itself began to change. The exoskeleton of shrimp and crab contains an orange-red pigment (reduced astaxanthin, also called astaxanthin), which is a carotenoid. When this pigment is combined with protein, it will turn yellow, orange, purple, green and blue due to the difference in protein. When protein is damaged or denatured or protein is separated from pigment (such as shrimp death), the color will change back to the original orange-red. Never eat it!

The efficacy of shrimp:

1. Enhance 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.

Pass 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. Conducive to recovery after illness

Shrimp is nutritious, soft and easy to digest, and it is an excellent food for people who are weak and need to be nursed back to health after illness.

5. 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.

Eliminate "time difference"

Scientists at Osaka University in Japan have recently discovered that astaxanthin in shrimp helps to eliminate the "jet lag" caused by jet lag.