What is the difference between freeze dryer and dehydrator
1. Different working principles
The working principle of the dehydrator is to use hot air to evaporate the water in the food, so as to achieve the purpose of dehydration, the working temperature of the dehydrator is higher, between 50 ℃ ~ 160 ℃. Vacuum freeze dryer is in the vacuum low-temperature environment, the material will be frozen into a solid, and then heated sublimation to remove the water in the material, so as to get freeze-dried materials. The working temperature of the dryer is lower, between -40℃~35 ℃.
2 Different investment costs
The price of the dehydrator is relatively cheap, and the power consumption of the equipment is relatively low; while the price of the food freeze dryer is high, and the energy consumption in the production process is also higher.
3 Drying effect is different
As the dehydrator adopts high temperature hot air dehydration technology, so in the process of high temperature drying, volatile substances in the material, aromatic substances, active ingredients and other losses, the loss of nutrients in the dried material is greater; while the food freeze dryer adopts low temperature drying technology, the material is dried in a low-temperature environment, the protein will not produce denaturation, nutrients, aromatic substances, enzymes to promote microbial growth and other substances are preserved to the maximum extent, the volume and shape of the freeze-dried material remain unchanged, good rehydration. The volume and shape of the freeze-dried material remain unchanged, and the rehydration is good. So, according to Wikipedia: freeze-drying is viewed as the optimal method of choice for dehydration of food because of the preservation of quality, meaning characteristics of the food product such as aroma, rehydration, and bioactivity, are noticeably higher compared to foods dried using other techniques.[1]
4 Returns are different:
High-temperature hot air dehydration after the material will be due to the evaporation of water and lead to wrinkles, in addition to high temperature damage to the nutrients in the material, thus affecting the price of dry materials. The freeze dryer uses low temperature drying technology, almost completely retain the nutrients in the material, such as vitamins, fibre, minerals and freeze-dried food is beautiful, good taste, so the price is also higher.
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We always adhere to the tenet of "quality first, customer first" and constantly improve the quality of our products and services in order to meet the needs and expectations of our customers. We welcome customers to consult and negotiate with us for mutual development and win-win cooperation! If you have any question about fruits freeze dryer ,Pls feel free to contact us:+8613395710684(Whatsapp)Email:luisa@kassel-group.com.
This article references relevant information from Wikipedia to ensure that accurate and detailed content is provided. Below are quotes from Wikipedia pages with related information:https://en.wikipedia.org/wiki/Freeze_drying
