The position of ultra-fine powder processing technology in the intensive processing of agricultural products is very important, because 80% of the world's agricultural products need to be crushed into food and industrial raw materials. The finer the particle size of the pulverization, the better the advantages of the agricultural product and the characteristics of the fine powder. The application of ultrafine powder processing technology in agricultural products is to make the roots, stems, leaves, fruits and animal bones, meat and eggs into fine powder, which becomes high-grade food and food raw materials. It can improve the quality and utilization of agricultural products, maintain the pure naturalness of agricultural products, have a strong taste, delicate taste, natural color, and maintain the biological activity and nutrients of agricultural products. More suitable for digestion and absorption. More new products can be developed. This will increase the value of agricultural products and lead to prosperity in rural areas. It is a leading enterprise of agricultural industrialization.
Superfine crushing technology is a high-tech developed in recent years. It has become the research focus of countries all over the world. So far, it has been involved in many fields such as chemical, metal, non-metallic materials, medicine, bioengineering, food, military, aerospace, electronics and machinery. Especially in the processing of agricultural products, the application has just begun, and the future is widening. . Micronized technology has been pulverized into large-scale products in agricultural products, so it is of great significance and will bring a new situation to the intensive processing of agricultural products.
For the purpose of ultrafine pulverization, a small piece of material having a particle diameter of 3 to 5 mm is generally pulverized to 100 μm or less (generally referred to as fine powder, finely pulverized), or pulverized to 10 to 30 μm or less (generally referred to as ultrafine pulverization or ultrafine pulverization). When the material is pulverized to a certain fineness, these fine powders produce many new characteristics, such as a large specific surface area and a large porosity, and a large surface energy (converted by mechanical energy or fluid energy). . This gives them high solubility, multi-faceted activity, and strong physical and chemical properties such as adsorption, explosiveness and fluidity. The reaction to light, electricity, magnetism and heat has also changed dramatically. It is said that when a substance becomes a fine powder, it is different from the original one, and it is transformed into a new physical and chemical property: "new substance." Therefore, there are a large number of new food materials that can be obtained by intensive processing of agricultural products and foods using their new characteristics. Develop more new products. For example, compressed biscuits made from ordinary flour are difficult to swallow, while compressed biscuits made of micronized materials make the biscuits swallow smoothly. The micro-powder food has strong adsorption, and the huge porosity of the micro-powder food causes the collection of pores, which can absorb and contain the fragrance for a long time; if a certain amount of carbon dioxide or nitrogen is absorbed, the preservation of the food will be greatly prolonged. Studies have shown that ultrafine pulverization can significantly improve the bioactivity of foods and pharmaceuticals and the absorption and utilization of active ingredients, and improve taste and palatability.
Advantages of ultrafine powder processing technology in food processing of agricultural products:
1. The direct product of micropowder processing is a micropowder with an average particle size of micron and submicron. Due to the small particle size of the fine powder, many unique micronized features are produced: such as the same medium force is significantly enhanced; the mixing uniformity with other substances is improved; its dispersibility, inclusiveness, stretchability, adsorption, solubility, Affinity, great changes in light, electricity, magnetism, heat, explosiveness, reinforcement and thermal properties. The physical properties are significantly better than the coarse particles without changing the molecular structure. The reaction rate is greatly increased in the chemical reaction. This changed the physical properties of agricultural products, improved the quality and developed more new products, expanded the use of agricultural products, and increased the value of agricultural products. Provide high-quality food ingredients for the food industry.
2, agricultural foods in the processing of micro-powder will cause material denaturation and modification, because the material will change the physical and chemical properties of the material under the impact of strong air current, especially in the processing of beans and grains.
3. The miniaturization of agricultural products makes the particles smaller than the area, which can improve the quality of the products and enhance the aroma of the agricultural products. Especially in the use of fragrances, Chinese herbal medicines are more obvious.
4, in the processing of micro-powder in agricultural products, it can produce evaporation and water removal, which can remove the moisture of the material. Generally, the amount of water removed by evaporation is about 10%. If you add more heat, you can remove more water. Agricultural products generally have a water content of 8-16% and both free water and bound water. There are also materials with high water content (such as fruits and vegetables), which can be pre-dried before pulverization to remove most of the water, and the remaining free water will evaporate with the air during the pulverization process.
5. In the operation of the micro-powder, it can be used for powder homogenization. The mixing uniformity is extremely high.
6. The miniaturization of agricultural foods is more digested and absorbed by the human body.
Examples of application of ultrafine powder technology in agricultural products:
1. The varieties processed in fruits and vegetables are: red fruit powder, pumpkin powder, jujube powder, coconut powder, chestnut powder, kelp powder, orange powder, mushroom powder, chili powder, banana powder, carrot powder, pollen powder, green vegetable pollen , walnut powder, pine seed powder, hazelnut powder, spinach powder, celery powder, almond powder, coriander powder, apple powder, onion powder, turning egg powder, leek powder, bean powder. The production process can be crushed by cold air (ie low temperature pulverization) and can preserve all nutrients. Increased water solubility and good taste.
2. The varieties processed in the seasonings are: the huge porosity of the micro-powder foods causes the collection of cavities, which can absorb and contain the fragrance for a long time. Therefore, the ultra-fine powder used as a seasoning has a richer flavor and flavor. The products currently produced include pepper, pepper powder, large powder, monosodium glutamate powder, beef powder, pork powder, chicken powder, fish meal, shrimp powder, ginger powder, garlic powder, ultra-fine white sugar powder, and ultra-fine salt powder.
3. The varieties of grain and grain processing include: the taste of whole wheat flour, soybean powder, rice flour and corn flour is better, so that the absorption and utilization rate of the human body is significantly improved. The wheat bran powder, the soybean micro powder and the like are added to the flour to be used to reform the inferior flour, and the high-fiber or high-protein flour can be made. The processed products are: whole wheat flour, bran powder, mung bean powder, red bean powder, red bean powder, glutinous rice flour, cooked full-fat soy flour, black rice flour, potato flour, sesame powder, and millet flour. It can be made into coarse grains. After coarsening, the coarse grains can change the physical properties, taste better, and make more new products. For example, special corn flour can make dumplings and noodles to meet people's needs. At the same time, the comprehensive utilization of food has been enhanced.
4. The varieties in the processing of aquatic products include: Spirulina, kelp, pearl, turtle, fish cartilage and other ultrafine powders processed by ultrafine powder have some unique advantages. Have a better medical effect.
5, Chinese herbal medicines and health products are: ginseng powder, licorice powder, inulin, pueraria powder, ganoderma lucidum powder, dried tangerine peel powder, Ophiopogon japonicus powder, Angelica powder, silver glutinous rice flour, gum blue powder, mulberry leaf powder.

6, the application of solid beverages: tea powder (red and green flowers), white fungus. Babao tea, Wumu tea, fruit drinks. Solid beverages that have been developed using ultrafine pulverization technology include powdered tea, bean solid beverages, ultrafine bone powder, calcium-rich beverages, and instant mung bean extracts. Brewing tea with boiling water, the body does not completely absorb all the nutrients of tea, such as vitamins A, K, E and most of the protein, carbohydrates, carotene and some minerals, etc. are largely retained in the tea residue, greatly affecting The nutrition and health functions of tea. If the tea leaves are made into powdered tea at normal temperature and in a dry state, all the nutrients of the tea leaves are easily absorbed directly by the human stomach and can be washed immediately. Oolong black tea and green tea powder can also be added to various foods to produce a brand new tea product.
7. Application in functional food processing: Actually, functional fortified foods, functional foods are developing all over the country. Under the influence of the theory of traditional Chinese medicine, "the homology of medicine and food," people generally think that diet is more important than medicine. The application of modern science and technology to research and develop traditional health-care functional foods to form industrialized production and become a new functional food will certainly promote the development of food deep processing industry. Ultrafine pulverization technology plays an important role in the preparation of some functional food materials. The current functional foods are mainly black five-category products, soy detoxification problems, low temperature pulverization to maintain nutritional problems, calcium supplements for fine bone powder, shell powder, sea shrimp powder, kelp powder for iodine supplementation, ultrafine powder processing technology Solved the above problem.
8, the application of plant eggs ***:

A. Plant protein mainly refers to soy protein and other vegetable proteins. It is a high-quality protein and has a wide range of uses, which can prevent disease and cure diseases. B. The vegetable protein represented by soybean has good functions such as emulsifying property, hydrophilicity, oil absorption property, cohesiveness, gel property, coloring property, foaming property and the like. Add food to improve quality. There are about 10,000 protein foods in the world today.
9. Application in foods containing oil, sugar and high glue:

Peanuts, sesame seeds, pollen, hazelnuts and other oily, sugary, pectin-containing, fibrous products can be pulverized into fine powder at low temperature. In particular, it can play a greater role in improving traditional Chinese food.
In summary: In summary, the application of ultrafine pulverization technology in food processing has the following important meanings:
1. Improve quality, improve the taste of food, make full use of the characteristics of micronized powder, and facilitate the absorption of nutrients.
2. Raw materials that were not fully absorbed or utilized were reused and new resources could be developed.
3, the original unprocessable materials can be processed into micro-powder, prepared and deep-processed into various functional foods, develop new food materials, increase new food varieties, and improve resource utilization.
4 Increased the added value of agricultural products and increased the income of farmers. Make the countryside go to the road of industrialization. The proportion of China's food industry's total output value in the industrial sector has leapt to the first place, reaching a scale of 750 billion yuan. Therefore, as a high-tech, ultra-fine pulverization technology will have broad application prospects in agricultural products and food processing.