A food freeze dryer is a device that uses freeze-drying technology to remove water from food, thereby extending the shelf life of food. Due to its advantages of preserving the original nutrients, taste, color and flavor of food, food freeze dryers have been widely used in the food industry. This article will introduce the working principle, characteristics, application scenarios and future development trends of food freeze dryers.
First, the working principle of the food freeze dryer.
The food freeze dryer is mainly composed of a refrigeration system, a vacuum system and a control system. Its working principle is to place the food to be dried in a low temperature environment, and use the refrigeration system to freeze the food below the temperature of ice crystal formation, so that the water in the food crystallizes into ice crystals. Then, the water vapor around the food is pumped out through a vacuum system, so that the ice crystals sublimate and escape from the surface of the food, so as to achieve the purpose of drying.
Second, the characteristics of food freeze dryer.
1.Preserve the original nutrients, taste, color and flavor of food: The food freeze dryer will not produce high temperature on the food during the drying process, so it can retain the original nutrients, taste, color and flavor of the food.
2.Extend the shelf life of food: By removing water from food, it can effectively reduce the activity of microorganisms and enzymes in food, thereby extending the shelf life of food.
3.Energy saving and environmental protection: The food freeze dryer adopts low temperature freezing method for drying, which has higher energy utilization efficiency and lower energy cost than the traditional high temperature drying method. At the same time, because the drying process is carried out in a vacuum environment, no harmful gases or waste are generated, so it is environmentally friendly.
4.Wide range of application: Food freeze dryer is suitable for a variety of different types and shapes of food, such as vegetables, fruits, meat, seafood, etc. At the same time, the integrity of the food can be maintained because it does not change the shape and structure of the food during the drying process.
3. Application scenarios of food freeze dryers.
1.Convenience food field: The convenience food field is one of the most widely used fields of food freeze dryers. By freeze-drying vegetables, fruits, meat and other ingredients, it is possible to make convenient foods that are easy to carry and preserve, and meet consumers' needs for fast and convenient diets.
2.Health care products: Because the freeze-drying technology can better retain the nutrients in the food, the food freeze-dryer has also been widely used in the field of health care products. By freeze-drying ingredients with health care functions, it is possible to make health care products that are easy to carry and easy to preserve, and meet the needs of consumers for health care products.
3.Aerospace field: In the aerospace field, food freeze dryers also have important application value. Since food is difficult to preserve in the space environment, food freeze-dryers can be used to preserve food ingredients for a long time, providing reliable nutritional security for astronauts.
4.Pharmaceutical field: In the pharmaceutical field, food freeze dryers can provide technical support for drug production and preservation. By lyophilizing the drug, the stability and shelf life of the drug can be improved, while reducing the dependence of the drug on the packaging container.
Fourth, the future development trend.
1.Efficient and intelligent: With the continuous development of technology, the future food freeze dryer will be more efficient and intelligent. Improve the energy efficiency and production efficiency of equipment by improving key technologies such as refrigeration systems, vacuum systems and control systems; At the same time, intelligent technology is introduced to realize the automation and remote monitoring and management of equipment.
2.Multi-functionalization: The future food freeze-dryer will develop in the direction of multi-functionalization. In addition to the traditional freeze-drying function, sterilization, sterilization, packaging and other functions can be added to meet consumer needs for food safety and convenience.
3.Environmental protection and sustainable development: With the increasing attention of society to environmental protection and sustainable development, the future food freeze dryer will pay more attention to environmental protection and sustainable development. Reduce the energy consumption and emissions of the equipment through the use of environmentally friendly materials and energy-saving technologies; At the same time, we will strengthen the research on the utilization and remanufacturing technology of equipment to achieve the sustainable development of equipment.