Originated in Central and South America. It is widely planted in subtropical and temperate climate zones all over the world. It is cultivated all over China.
Corn is an excellent crop with rich nutrition. As a yield-increasing crop in China, corn is the key source of concentrated feed for animal husbandry, aquaculture and aquaculture, and it is also one of the essential raw materials for food, medical services, light industry and industry.
Shape feature
Tall panicum miliaceum. The culm is upright, usually unbranched, 1-4 meters high, and each node at the top has an aerial support root. Petiole with transverse veins; Ligule membranous, about 2 mm long; The leaves are flat and spacious, strip-lanceolate, with a ring-shaped ear at the top, hairless or defective, thick midvein and slightly unsmooth edge. The terminal tassel is large and medium-sized, and the spindle and raceme axis of the machine tool and the axils are covered with fine hairs; Male spikelets are twins, close to 1cm, spikelet stalks are long and short, each of which is 1-2mm and 2-4 mm long, and covered with fine hairs; The two glumes are nearly equal in length, membranous, about 10 veins, ciliate; The lemma and lemma are protective, and the Yu Ying is shorter; Anthers are orange; About 5 mm long. The female inflorescence is surrounded by the largest sheath bract; Female spikelets are twins, arranged in 16-30 rows on the coarse axis, and the two glumes are equal in length, spacious, pulse-free and ciliated; Lemma and lemma are protective films, and stamens have slender linear styles. The caryopsis is spherical or oblate, and its size varies with the growth and development standards except that the glume and barnacle are exposed after perfection. Generally, it is 5- 10mm long, slightly longer than its width, and the embryo length is 1/2-2/3 of that of caryopsis. Sex chromosome 2n=20, 40, 80. Autumn in flower and fruit period.
Regulating spleen and appetizing, preventing and preventing severe constipation and seborrhea.
The first function of corn is to strengthen the spleen and stimulate appetite. For people with poor appetite and poor digestion and absorption, moderate consumption of corn has a very good effect on promoting appetite and digestion. The second function of corn is to avoid and prevent severe constipation. Because corn, as a minor cereal, contains sufficient dietary fiber and has a very good effect on promoting intestinal peristalsis, it can play a very good role in preventing constipation. The third function of corn is that it contains enough vitamins, and the prevention and treatment effect on beriberi will be very significant, thus reducing the occurrence of beriberi characterized by allergic dermatitis, diarrhea and dementia.
Nutritional components of corn
1, corn has a high vitamin content. The chemicals contained in it can help everyone to promote gastrointestinal peristalsis and treat constipation and colitis reasonably. It is not easy to digest and absorb too much glucose water, and then it can help you lower your blood fat and so on.
2. The calcium content is close to that of dairy products. Scientific and reasonable experiments have confirmed that nearly 300 mg of calcium can be given per100g of corn, which is almost equivalent to the calcium often contained in dairy products. Rich and colorful calcium can reduce blood fat. If you take 1 g calcium every day, your blood pressure can be reduced by 9% after 6 weeks.
3. The germ and bee pollen of corn containing a lot of vitamin E contain a lot of vitamin E, which can promote cell division, improve the basic metabolism of human body, reduce antibody cholesterol, regulate the endocrine function of nervous system and women, moisturize skin tissue, make skin cells malleable and shiny, and avoid skin lesions. It can improve people's energy and physical strength, prevent cell aging and brain function decline, and has anti-arteriosclerosis effect.
4. Zeaxanthin is helpful to prevent macular space occupying lesions in the elderly. Zeaxanthin, which is often contained in corn, can prevent macular space-occupying lesions in the elderly. According to the analysis made by Harvard Medical School and many American research centers 65438-0994, higher intake of zeaxanthin can reduce the probability of macular space-occupying lesions in the elderly.
5. Corn contains enough carotene and vitamins. Carotene, which is often contained in corn, can be converted into vitamin D after being digested and absorbed by human body. Corn also contains vitamins, which are much higher than rice. Vitamins play a key role in protein and the whole process of fat and sugar excretion, which can help us to maintain the normal functions of the central nervous system, digestive tract and skin. If the body lacks unsaturated fat, it is likely to cause mental hallucinations, auditory hallucinations, mental disorders and other diseases, as well as glossitis, glossitis, diarrhea, skin diseases and so on in digestion and absorption.
6. Corn contains fatty acids and lipoic acid. Fatty acids can reduce cholesterol, prevent cholesterol from accumulating in capillary cavity, and then reduce the occurrence of myocardial infarction, which has sufficient effect on preventing hypertension and cardiovascular and cerebrovascular diseases. American biologists found a fatty acid in high-yield whole milk of dairy cows fed with corn oil concentrated feed, which can prevent melanoma, breast cancer, intestinal cancer, ovarian diseases, prostate tumors and so on. Because this fatty acid can eliminate free radicals in somatic cells, protect DNA from damage and avoid cancer caused by somatic gene mutation, in addition, lipoic acid contained in corn also has anti-cancer effect.