Application of superfine powder technology to develop edible resources
With the development of modern technology, the process puts forward higher and higher requirements on the particle size of powder, and many materials need to be crushed to submicron or nanometer level, which cannot be realized by traditional crushing technology and equipment. Ultrafine powder technology is developed based on this and involves the preparation and application of ultrafine powder and a new technology related to it. Its research content includes ultrafine powder preparation technology, classification technology, separation technology, drying technology , Transportation mixing and homogenization technology, surface modification technology, particle composite technology, detection and application technology, etc. Due to fine particle size, narrow distribution, uniform quality and few defects, ultrafine powder has large specific surface area, high surface activity, fast chemical reaction speed, high solubility, low sintering temperature, high sintered body strength, and good filling and reinforcing performance. And other characteristics and unique electrical, magnetic, optical properties, etc., are widely used in high-performance ceramics, ceramic glazes, microelectronics and information materials, plastics, rubber and composite fillers, lubricants and high-temperature lubricating materials, fine abrasives and grinding High-tech and new material industries such as polishing agents, paper-making fillers and coatings, advanced refractory materials and thermal insulation materials.
Application of superfine powder technology to develop edible resources
1 Grain processing
The glucosidic bond of flour may be broken during the superfine process, and it is easy to be hydrolyzed by α-amylase, which is beneficial to fermentation. As the flour particles become smaller, the surface area becomes larger, which improves the adsorption, chemical activity, solubility and dispersibility of the material, which changes the physical and chemical properties of the macroscopic flour. Wu Xuehui proposed that flour with different particle sizes can be used to obtain flour with different protein content to meet the needs of different products. The flour processed by ultra-fine powder has significantly improved taste and human absorption and utilization. Add wheat bran powder, soybean micropowder, etc. to flour to transform low-quality flour into high-fiber or high-protein flour.
2. Deep processing of agricultural and sideline products
In recent years, plant-based green food has become the focus of attention of countries all over the world, and edible plant-based food is an important resource for human survival. This situation can be improved if ultra-fine powder technology is used. For example, the first step in the deep processing of edible plant stems and fruits is to achieve the purpose of cell wall breaking and component separation to varying degrees by controlling the crushing fineness.
3. Functional health food
Ultrafine powder technology can be widely used in various fields of health food industry. Generally speaking, the use of ultra-fine crushing high-tech means to crush health food raw materials into ultra-fine products with a particle size of less than 10 μm is called ultra-fine health food. It has a large specific surface area and porosity, so it has strong adsorption and high activity.
4. Aquatic product processing
Spirulina, kelp, pearls, turtles, shark cartilage and other ultrafine powders processed through ultrafine grinding have some unique advantages. The traditional method of processing pearl powder is ball milling for more than ten hours, and the particle size reaches several hundred meshes. However, if pearls are crushed instantaneously at a low temperature of about -67°C and under strict purification airflow conditions, ultrafine pearl powder with an average particle size of 1.0 μm and D97 below 1.73 μm can be obtained. In addition, the entire production process is pollution-free. Compared with traditional pearl powder processing methods, the active ingredients of pearls are fully preserved, and its calcium content is as high as 42%. It can be used as a medicinal diet or food additive to make calcium-supplementing nutritious food.
In summary, the application of ultrafine powder technology in food processing has the following important significance: (1) it can expand the utilization range of edible resources and improve the quality of food; (2) it can improve the biological activity of materials; (4) It can ensure the integrity of the raw material composition; (5) Simplify the production process of the product and reduce the production cost.
Ultrafine powder technology has a wide range of uses in the food industry, and plays a very important role in developing new edible resources and improving product quality.