According to its structural characteristics, corn deep processing can be divided into dry method and wet method. Dry grinding refers to the dry grinding of corn, and its products are mainly used in various food, feed and fermentation industries.
Wet processing is to physically divide corn kernels into five products, such as corn syrup, corn starch, corn germ, corn gluten protein and cortex fiber, among which corn starch is the main product, which can be eaten directly or reprocessed. All these products are widely used in food, textile, paper making, chemical industry, medicine, building materials and other industries.
2. Industrial use of corn.
As a renewable clean energy, fuel ethanol uses corn (or other grains, sugar, etc.). ) as raw materials, using the principle of biological fermentation to produce anhydrous ethanol with purity greater than 99.5%. Fuel ethanol and gasoline are mixed in a proper proportion to make ethanol gasoline.
In addition to making fuel, corn can also be used to repair soil polluted by oil. Adding surfactants from different sources, such as chemical synthesis, microbial production and plant extraction, to the soil at the concentration of 10000mg/L can strengthen the remediation of petroleum hydrocarbons in the soil by corn.
It was found that after adding surfactants and soybean lecithin to the soil, the number of microorganisms increased obviously, and the decrease of petroleum hydrocarbons increased by 12% and 19% respectively, but after adding chemical surfactants, the number of microorganisms and the accumulation of polycyclic aromatic hydrocarbons in corn plants did not change significantly. This technology is convenient and practical, and it is an environment-friendly treatment method, which can be widely used in the treatment of oil-contaminated soil.
Extended data:
The cultivation history of maize in China is about 470 years. However, due to high yield, good quality and strong adaptability, the planting area has developed rapidly. At present, China's sown area is about 300 million mu, second only to rice and wheat, ranking third among food crops. Second only to the United States in the world. China has also accumulated rich experience in corn cultivation techniques.
The natural conditions of corn producing areas in China vary greatly. According to the local frost period, soil texture, soil fertility and planting month, the yield of forage corn and purslane hybrid is high. We should also pay attention to the breeding of improved varieties and rationally arrange the area of dantian.
The sowing date of maize is affected by temperature and humidity. The best sowing date of spring sowing corn is 7.6cm, and the upper layer is 65438 05℃. The summer sowing corn in North China should be sown in time after wheat or peas are harvested. Sowing depth is 2.5- 10cm according to soil moisture, and 5-6cm is the most suitable.
Sowing amount per mu is 3-4 kg, and 4000-6000 plants per mu. Planting method of forage corn. Unicast, convenient mechanized operation from planting to harvesting. Intercropping with soybean, soybean, pea and vetch can increase the yield of protein per unit area.
Baidu encyclopedia-corn