Who can tell me what alfalfa is and where it comes from?

Alfalfa Alfalfa is the tender stem and leaf of Leguminosae Medicago sativa or Medicago australis. The history of planting alfalfa as livestock feed is longer than that of any other plant. It may have been planted in southwest Asia before history is recorded. When the Persians invaded Greece in 490 BC, they brought it into this country. Historians speculate that alfalfa was introduced to Italy from Greece in the first century A.D. and has been introduced to Europe ever since. Spanish developers brought alfalfa to South America in the early15th century, and European colonists introduced it to the United States in 1736. Alfalfa was first published in the Record of Famous Doctors in the late Han Dynasty in China, saying: "Alfalfa is safe, beneficial to people and can be eaten for a long time. The tender stems and leaves of alfalfa contain protein, fat, sugar, crude fiber, vitamins B 1, B2, B 12, C, E and K, and minerals calcium, phosphorus, potassium and iron. In addition, it also contains soap, alfalfa phenol, alfalfa element, daidzein, citrulline, concanavalic acid and pectin acid. Suntanned alfalfa is also rich in vitamin D; Alfalfa is not only high in calcium, but also easy to be absorbed by human body, while spinach is difficult to be absorbed by human body because of its calcium combined with oxalic acid. Alfalfa contains more iron than spinach; The tender stems and leaves of alfalfa contain more protein, sugar, calcium and phosphorus than spinach. Vitamin C is 0/29 mg per 100 g/kloc-0, while spinach is only 3 1 mg. Alfalfa has many health functions: 1. Estrogen-like: Daidzein and alfalfa contained in alfalfa have estrogen-like biological activities. 2. Cough relieving and asthma relieving: Alfalfa contains substances such as alfalfa element and alfalfa phenol, which has the function of relieving cough and asthma and has certain curative effect on bronchial diseases. 3. Anti-inflammatory and bacteriostasis: The whole alfalfa extract can inhibit the growth of Mycobacterium tuberculosis, which is effective for leukoplakia of spinal cord in mice. 4. Inhibition of intestinal peristalsis: Alfalfa can significantly inhibit the contraction of isolated rabbit small intestine. Injecting 4 mg alfalfa into rabbit small intestine cavity can slow down the peristalsis and contraction of small intestine. 5. Replenish blood and stop bleeding: Alfalfa contains a lot of iron, so it can help treat anemia. In addition, the vitamin B 12 contained in alfalfa can treat pernicious anemia. In addition, alfalfa also contains vitamin K with hemostatic effect, which is commonly used by the people to treat gastrointestinal bleeding. 6. Relaxation and detoxification: alfalfa contains crude fiber, which can promote the peristalsis of large intestine and help the excretion of feces and toxins. Alfalfa is a kind of osmotic product, so it is not suitable to eat more. Alfalfa should be fried, not burned. Medicago sativa health care recipe: Medicago sativa is a famous health food. The following are several health-preserving recipes for reference: 1. Treatment of urinary calculi: fresh alfalfa 90-150g, mashed with juice. 2. Adjuvant treatment of jaundice: Medicago sativa15g, Herba Artemisiae Scopariae15g, decocted in water. 3. appetizing and moistening intestines: fresh alfalfa 250g, clean fish 200g, eggs 1 piece, onion, ginger and garlic powder 15g. Wash alfalfa, cut it into sections, and wrap the meat slices with egg white and wet starch. When the oil in the pot is heated to 50% heat, remove the fish fillets and drain the oil; Enlarge the fire in the pan, add oil and heat it to 70%, add onion, ginger, minced garlic and cooking wine, add alfalfa and stir-fry until cooked, add fish fillets, add salt and monosodium glutamate, stir-fry evenly, and pour sesame oil on it. 4. Nourishing yin and strengthening spleen: alfalfa 150g, 3 eggs and chopped green onion 10g. Cut alfalfa into sections and stir the eggs evenly; Heat oil in the pan, add chopped green onion, stir-fry eggs into blocks, add a little water until cooked, cut into small pieces, stir-fry alfalfa until it tastes good, and take out the pan. This dish has the effects of nourishing yin, moistening dryness, strengthening spleen and clearing stomach. It is suitable for vexation, insomnia, fever of hands and feet, dry cough and bloody stool, constipation, hemorrhoid and malnutrition.