Among the first few challenges that human society faced when our pattern seeking brains allowed us to evolve enough that we started to recognize them was the preservation of food. A big part of the reason why that is the case has to do with the fact that most food that you can hunt, gather or grow will spoil in some way, shape or form if it is left out for long enough, so suffice it to say that figuring out how to keep this food from rotting was a top priority for a good long while.
One of the most effective methods that we found for preserving the food items that we managed to scavenge involved drying them up at any given point in time. Dried food does not contain any moisture which means that bacteria and mold would not get a chance to grow inside of it. If you are considering Ninja Foodi OP302 vs OP301, you should know that both of these options can help you dehydrate food. Removing moisture from organic compounds can secure them from microbial growth, thereby making it so that you can keep the food in a storage container for years on end without it going bad.
Being able to preserve food for such extended durations can be necessary, especially when you consider the reality that refrigeration is an excessively energy intensive process. Some of the best foods to dry include fruits as well as meats since they retain much of their flavor along with their nutritional content even after you dry them out completely. You should buy this appliance if you want to try out dehydrated food in the near future.