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One that involves 3 main steps:
* Freezing
* Lowering pressure
* Removing the moisture through sublimation
The end product is completely different than "dehydrated" foods. Because of this complexity, it takes dedicated, high-tech equipment to freeze dry food. Like dehydrating, you place food on large open racks to allow for air circulation. But, instead of placing the food in a high temp environment, you load the racks into a vacuum chamber. Then the freeze dryer lowers the temperature inside the vacuum chamber. To an incredible low temp (around -40deg F). Once the food is completely frozen, a vacuum pump lowers the pressure inside the chamber. And then the temperature is slowly raised back to normal. Due to the reduced pressure, the water in the food "sublimes". Sublimation is the process where solid ice changes directly into water vapor without ever becoming liquid. The food gives up its water content without sacrificing texture, flavor, or nutrition.
| Model | HFD-1 | HFD-4 | HFD-6 |
| Power | 750W | 1100W | 2300W |
| Dimension | 400*550*700 | 510*700*850 | 710*800*1060 |
| Cold trap Temp | ≤-40ºC | ≤-40ºC | ≤-40ºC |
| Dry Temp | -25~+60ºC | -25~+60ºC | -25~+60ºC |
| No load | <15Pa | <15Pa | <15Pa |
| Water catching capacity | 1-3KG | 4-6KG | 6-8KG |
| Shelf | Four layers with heating | Four layers with heating | Four layers with heating |
| Weight | 72KG | 95KG | 130KG |
| Freeze-dried area | 0.1m² | 0.4m² | 0.6m² |
| Shelf Spacing | 45mm | 45mm | 50mm |
| Shelf dimension | 145mm*278mm | 200mm*450mm | 330mm*440mm |
| Voltage | 220/50Hz | 220/50Hz | 220/50Hz |
The benefits of freeze drying
1.More Moisture Removal
One of the main reasons to remove moisture from food is to prevent the spread of mold and bacteria.
All living organisms need moisture to thrive. So by lowering the water contents, it's nearly impossible for them to survive.
Most home dehydrators can remove about 90 to 95 percent of the water contained in foods.
By comparison, freeze drying will remove up to 98 to 99 percent of moisture content.
2. Much Longer Shelf Life
The lower water content of freeze dried foods allows for a much longer shelf life if stored properly. That's why it's considered one of the best non-perishable foods.
Freeze dried meals properly sealed in mylar bags will keep their texture, flavor, and nutritional value up to 25 years (or longer)!
3. Better Nutritional Content
Dehydrating food doesn't change the fiber or iron content. But many of the vitamins and minerals begin to break down at higher temps.
Freeze-dried foods keep more of these valuable vitamins and minerals.
4. More Appealing Appearance & Composition
For most people, the biggest hurdle for dehydrated foods is taste and texture.
Freeze dried foods keep the shape and color of fresh food. You can often rehydrate the food back to a similar original consistency!
For example:
Freeze-dried strawberries become soft again if you add a little water or place them in your mouth.
5. Lower Weight
The greater reduction in water content provides an extra reduction in weight.
This is great when you have to pack your food on your back for miles and every ounce counts!
6. Less Cooking Time & Effort
Freeze-dried foods generally only need the addition of water to reconstitute them. Unlike the slow simmer, you have to do with dehydrated foods.
Depending on what you're preparing, most freeze-dried foods will be ready to eat in less than 5 minutes.
This makes meal prep faster and easier for everyone - especially if backpacking or camping.
A modern ice machine manufacturer integrating R&D, production and marketing with more than 18 years experience.
Our main production: Granular ice machine, flake ice machine,cube ice machine, industrial ice machine,ect.
We have set up a very efficient and reliable system for foodservice industry, supermarket, fishery industry, Plant
cooling,Vegetable Showers and Laboratory research solution. In addition, BaoPin also provide long-term the OEM&ODM services for well-known brands.
Excellent production technology, professional production equipment and modern management mode make us always occupy the forefront of the industry. Own R&D team, which regularly conducts research on existing customer groups every year, organizes customer feedback, and then upgrades technology and appearance.
"No best, only better and better" is our aim!
1. Is the freeze dryer for home use?
Yes, this is the small scale for personal use or small business.
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