- Anything with too high a fat content may give some problems because the oils or fat will not evaporate, only the water will.
Sugars are simple carbohydrates that provide an excellent source of calories for energy. Sugars also add the sweet taste to many of our most delicious foods. Sugar can be stored in dry form (crystals) or in a liquid form (syrup –including maple syrup).
Ideal vacuum pressure and drying temperature is maintained for each material and preserves freshness and potency
One of the reasons I like the small freeze dryer is the size. At the same time, my large freeze dryer takes up space equivalent to a clothes dryer—the small one doesn't.
One oil free pump. The oil free vacuum pump can be used with any size freeze dryer. They are quiet, fast, and easy to use. The Harvest Right oil free vacuum pumps do not require oil changes and do not require regular user maintenance.
Isolated pump by capping the stack (no meter to measure pressure, but no bubbling after a very short pumpdown - pump sounded normal for a high vacuum situation)
I removed the side covers and found the water dripping from the chamber insulation. I called up HarvestRight to ask for ideas on how to avoid this in the future.
A bit of background on me - I used to work in a sold state fabrication lab (university research lab) and had a lot of hands-on work with ultra-high vacuum equipment. The pumping we do for freeze drying was what was required to just start
Commercial exhaust hoods serve a couple of different purposes. They can be used to reduce smoke, steam, and hot air from a kitchen during cooking. They can also be used to filter grease and food particles.
Most other methods for extracting water also destroy enzymes and terpenes due to heat being used in the extraction process. Because freeze drying does not use heat during operation, the enzymes and terpenes in freeze dried products are not destroyed.
We’ve bought six so far with two more on the way. But families and individuals considering getting their own can and should as long as they go in with their eyes open.
One idea I that I had was to freeze-dry sorbet. Sort of a twist on astronaut ice cream. I've had freeze dried strawberries, and those have a nice crunchy texture.
Making Know More jerky safely requires either the use of curing salts (containing nitrite) or enough heat in an oven or dehydrator so that the heat will kill organisms before they multiply.
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