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However, the common disadvantages of food lyophilizers, whether they are domestic equipment or imported equipment, are high prices, high energy consumption, and slow investment recovery. Lowering costs and reducing energy consumption are the main directions for freeze dryers in the future. Therefore, relevant experts concluded that the research direction and development trend of food freeze dryers are as follows:
(1) Reducing costs and energy consumption Some lyophilizers in foreign countries do not use stainless steel, but use low-carbon steel to coat foods to dry the resin, which emits infrared light at room temperature. The surface of the shelf is coated with high-performance far-infrared emitting materials to enhance its radiation capability; the surface of the tray is treated to enhance its absorption capacity. The optimization of structure, size and frosting characteristics of the water trap is more practical because the current cost is equivalent to the cost of the freeze-dried box and the power consumption is greater. For a lyophilizer, the heating system only supplements the heat of sublimation. The power consumption should not be too high, but the existing equipment is not satisfactory. The structure should be optimized and the energy consumption should be reduced.
(2) Guaranteeing quality and improving performance In practical applications, freeze dryers of some manufacturers cannot always be put into normal production after installation; some lyophilizers can produce but have high energy consumption. Some components continue to fail and affect normal production. Therefore, the quality of the freeze dryer must be guaranteed. Increasing performance means that new features of the equipment are enhanced in addition to heating rate, pumping rate, temperature uniformity, and vacuum stability. For example, to increase the judgment function at the end of lyophilization, the simplest method is the weighing method. At present, there have been trials but they are not satisfactory. Quality sensors should be developed, with smaller primary elements giving the change in mass over time.
(3) Development of continuous freeze-drying equipment Most of the freeze dryers currently produced are batch-type products. With the development of a large number of industrial technologies, the development of continuous freeze-drying equipment and the increase of freeze-dried product output will be an inevitable trend.
(4) Raising Health Standards In recent years, Western countries have started implementing HACCP systems in food production companies, and have put forward more stringent requirements for the disinfection and sterilization of food processing equipment and health management. Many Japanese manufacturers have changed the vacuum drying chamber of the original galvanized steel sheet into a stainless steel vacuum chamber, reducing pollution.
Experts believe that currently domestic researchers have successfully developed a series of vacuum freeze-drying equipment, which has laid a good foundation for the development of vacuum freeze-drying technology in China. With the increasing demand for freeze-dried foods in the international market and the gradual improvement of China’s accession to the WTO and the people’s living standards, freeze-dried equipment will have considerable development.
Association should become a lubricant between government and enterprises
From January 14 to 18, Hui Lusheng, head of the State Food Safety Inspection Group, said in an inspection work in Guangxi that industry associations should be the “lubricant†between the government and the enterprises.
In the food safety seminars organized by the inspection team for food-related industries such as Guangxi food, fishery, light industry, and starch, and representatives of some food production and processing companies, Hui Lusheng stressed that the emergence of various industry associations is a development of the market economy. The sign, but the industry association is not a secondary government, but an intermediary between the government and the enterprise. The association’s arena is very large and has the irreplaceable advantages of the government. Many associations that the government can't do can do a good job. Therefore, they should be properly positioned to give play to the role of lubricants. The association should actively handle the contradiction between the government and the enterprise, handle the relationship between supervision and development, and actively serve the enterprise. As long as we carefully study the market and act according to the laws of the market, we are more familiar with the market than the enterprises. The prospects of the association will be optimistic. Hui Lusheng asked the Association to: First, guide enterprises to standardize their operations and promote the sound development of the market; Second, they must focus on the quality of enterprises to help enterprises improve the level of production and management; Third, we must protect corporate rights and support enterprises to become bigger and stronger.
Research direction focuses on reducing costs and reducing energy consumption
December 14, 2022