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Yes, dehydration is one of the oldest methods of food preservation: 
  • How it works
    Dehydration removes water from food through evaporation or sublimation. This reduces the amount of moisture available for bacteria to grow, which prevents food from deteriorating. 
  • How it's done
    Dehydration can be done using a variety of techniques, but they all involve applying heat to force moisture out of the food. For example, you can dry food in the sun or pass hot air over it. 
  • Benefits
    Dehydration is particularly effective in hot, dry climates. It also requires less energy than freeze-drying. 
  • Challenges
    However, open drying can lead to contamination, insect infestation, and spoilage from rain. In some areas, it can be difficult to keep dehydrated food safe due to humidity. 

 

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