Preservatives protect the food from bacteria. It makes it so that it last longer and taste great! Think of PRE-SER-VA-TION, it preserves the food so that bacteria and other harmful bacteria don't...
Food Preservation is the protection of perishable foods from deterioration by removing conditions necessary for growth. preservation comes in general, in two types: packaging and alternative...
Dehydration is pretty straight forward and involves reducing the water content of food. Removing moisture from food inhibits various bacteria and molds from growing and spoiling it. The water content...