2. Difference in physical characteristics: Generally, the head of marine shrimp is bigger, looks stronger, has darker color and larger branches, as shown in figure 1. Shrimp is smaller, thinner and lighter in color, as shown in Figure 2.
Legend 1:
Legend 2:
3. Different species of shrimps: The shrimps include Penaeus vannamei, Penaeus Indicus, Penaeus Moggi, Penaeus monodon and Penaeus China. Shrimp includes Macrobrachium rosenbergii, Macrobrachium nipponense, Macrobrachium nipponense, Macrobrachium hainanense and Macrobrachium krimsonii.
Extended data:
First, the nutritional value of shrimp:
1, protein
Shrimp contains 20% protein, which is one of the foods with high protein content, several times to dozens of times that of fish, eggs and milk.
2. Amino acids
Compared with fish, the valine in prawn is not high, but it is a balanced source of protein. In addition, prawns contain glycine, and the higher the content of this amino acid, the higher the sweetness of prawns.
3. Taurus
Taurine contained in prawns can lower blood pressure and cholesterol, so it has a certain effect on preventing metabolic syndrome.
4. Trace element zinc
Shrimp is rich in trace element zinc, which can improve people's taste disorder, growth disorder, skin discomfort and sperm malformation caused by zinc deficiency.
5, magnesium, calcium
Magnesium contained in prawns plays an important role in regulating heart activity and protecting cardiovascular system. It can reduce serum cholesterol, prevent arteriosclerosis and dilate coronary artery, which is beneficial to prevent hypertension and myocardial infarction.
6. Astaxanthin
Astaxanthin in prawns helps to eliminate the "jet lag" caused by jet lag.
7. Sodium, copper and selenium
Adjust osmotic pressure and maintain acid-base balance. Keep normal blood pressure. Enhance neuromuscular excitability. Copper is an indispensable micronutrient for human health, which has an important influence on the development and function of blood, central nervous system and immune system, hair, skin and bone tissue, brain, liver, heart and other internal organs.
Selenium can resist carcinogenic lead and thallium, improve human immunity and inhibit the formation of cancer cells, so it has anticancer effect, especially for patients with intestinal cancer with low plasma selenium level.
Second, the benefits of eating shrimp:
1, tonifying kidney
Traditional medicine believes that it is sweet, salty, warm, nourishing kidney and essence, so shrimp is also a very suitable seafood for men.
2. Breastfeeding
Eating shrimp also has the function of breastfeeding. New mothers can eat a little shrimp properly after delivery, which can not only supplement nutrition, but also play a role in breastfeeding, which is also very beneficial to breastfeeding.
Step 3 nourish
Eating shrimp is a good tonic for people who are weak, short of breath and have no appetite after a long illness. Shrimp can be used as nourishing food, and regular eating of shrimp can strengthen the body.
4, add a variety of nutrients
Shrimp has a high nutritional value and is full of treasures. Shrimp brain contains essential amino acids, cephalin and other nutrients; Shrimp meat contains a lot of protein and carbohydrates.
Shrimp skin contains many nutrients needed by human body, such as astaxanthin, calcium, phosphorus and potassium. Shrimp is a high-protein and low-fat aquatic product. In addition, shrimp is rich in carotene, vitamins and eight essential amino acids. Therefore, eating shrimp is beneficial to the body's intake of adequate nutrition.
Reference 1: Baidu Encyclopedia-Shrimp
Reference 2: Baidu Encyclopedia-River Shrimp