What is the correct Temperature to set the Excalibur Dehydrator at to make raw foods?Answer by Dr. Gabriel Cousens:Low-temperature Food dehydration is a technique that warms and dries food that will not destroy enzymes. It has been suggested by Edward Howell in his book Food Enzymes for Health and Longevity that food enzymes are destroyed when the food temperature reaches 115 to 120 degrees F.