Claim: Food dehydrators require neither wind sources, solar energy, electric power nor biofuel to preserve and extend the shelf life of various foods.
Evidence: Thus, food dehydrators are used to preserve and extend the shelf life of various foods. Food dehydrators require heat sources such as solar energy, electric power or biofuel, and vary in form from large-scale dehydration projects to do-it-yourself projects or commercially sold appliances for domestic use.