Food spoilage is mostly caused by microorganisms and a lot of those microorganisms need oxygen to live. By removing the oxygen we reduce the growth of certain microorganisms. The Vacuvita Home Base removes oxygen and prevents light (which is also a cause of growth for microorganisms) from affecting your food. When you store food in a vacuum and then in the freezer, you remove almost all the causes for food spoilage. The combination of the Vacuvita with the additional storage containers and bags is ideal for this.