FD-5 middle scale vacuum freeze dryer
Main applications for food:
Freeze drying is used to preserveÂ food, and because of its unique characters, the process has been popularized in the forms of freeze-dried ice cream initially asÂ astronaut food.
And with the development of this technology and decrease of processing cost, it is nowadays also widely used to produce essences or flavorings to add to food. Because of its light weight per volume of reconstituted food, freeze dried product is also popular and convenient forÂ hikers. More dried food can be carried per the same weight of wet food, and has the benefit of "long life" compared to wet food that tends to spoil quickly. The hikers then reconstitute the food with water available at point of use.Â Instant coffeeÂ is sometimes freeze-dried, despite the high costs of the freeze-driers used.
Freeze-dried fruits are used in some breakfast cereal or sold as aÂ snack, and are an especially popular snack choice among toddlers,Â preschoolersÂ andÂ dieters, as well as being used by some pet owners as a treat forÂ petÂ birds or koi fish.
Culinary herbs are also freeze-dried, although hot air dried herbs are far more common and less expensive.
And freeze-dried instant soup is also very popular in the meals provided on air plane.
Vacuum freeze drying technology:
Freeze drying,Â also known asÂ lyophilization,Â is aÂ dehydrationÂ process typically used toÂ preserveÂ a perishable material or make the material more convenient for transport.
The freeze drying process is to freeze the materials firstly, and after frozen the products will be load into the vacuum drying tank which will bring the vacuum environment for the ice to sublimate to vapor, and with the condenser inside the tank condense the vapor to ice on the surface of the coils, the products will be dehydrated.
The technology of Vacuum freeze drying is mainly utilizing the principle that water will sublimation directly from ice to vapor when it is in some specific vacuum environment.Â The freeze drying process is to freeze the materials firstly, and after frozen the products will be load into the vacuum drying tank which will bring the vacuum environment for the ice to sublimate to vapor, and with the condenser inside the tank condense the vapor to ice on the surface of the coils, the products will be dehydrated.
Advantages of freeze dried food:
There are several advantages of freeze-dried products when compared to regular hot air dried products.
1)Â The freeze dried products have long preservation time.Â If a freeze-dried substance is sealed to prevent the rehydration ofÂ moisture, the substance may be stored atÂ room temperatureÂ without refrigeration, and be protected against spoilage for many years. Preservation is possible because the greatly reduced water content inhibits the action ofÂ microorganismsÂ andÂ enzymesÂ that would normallyÂ spoilÂ or degrade the substance.Â
2)Â Easy transportation.Â With light weight and well packed freeze dried products can be easily transport by normal containers or any other transportation method. No needs for cold storage facilities therefore save a lot of cost for transportation.
3)Â Better quality products.Â Freeze drying causes less damage to the substance than otherÂ dehydrationÂ methods using higher temperatures. Freeze-drying does not usually cause shrinkage or toughening of the material being dried. In addition, appearance, flavors, smells and nutritional content generally remain unchanged, making the process popular for preserving high quality food.
4) Extremely high rehydration capacity.Â Freeze-dried products can be rehydrated (reconstituted) much more quickly and easily because the process leaves microscopic pores. The pores are created by the ice crystals that sublimate, leaving gaps or pores in their place. This is especially important when it comes to instant or convenient food uses.
> Vacuum drying vessel system
>Â Heating system
>Â Cold trap condensing and defrosting system
>Â Vacuum system
>Â Freezing system
>Â Refrigeration system
>Â Material handling system
> Control system
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Units : g/ct/oz/ozt/dwt/tola/lb/tmr
Scale size : 270*170*80mm
Scale color : whitePower : battery 6v + adapter 12v/1ah(include)
Features :High-precision straining resistance sensor
Strong anti-overload function
Optional power saving mode
With LCD display, blue backlight (optional)
Operating temperature: 10 to 60 â„ƒ
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