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6500 BCE
Discovery of Salt
Salt mines were discovered in Salzburg, Austria. It was Discovered that when salt was added to food it allowed the food to be eaten longer -
800 BCE
Ice and Snow
Ancient Greeks discover that food does not spoil as fast when it is cooled by ice or snow. Used a method that we use with our refrigerators -
Storage Box
People discovered that a storage box that was insulated helps all the food in the box consistently last longer. This was the first use of an ice box. -
Canning
Canning was first invented by a chef in France named Nicolas Appert. Discovered that by cooking foods and sealing it in metal cans, the food would last longer. -
Flash Freezing
Developed by Clarence Birdseye. Flash freezing rapidly cools food to a frozen state. -
Refrigeration
An inventor from Ohio developed the first portable refrigeration unit for truck and train cars. -
Freeze Dried Foods to the Moon
. The astronauts took freeze-dried foods to the moon. The freeze drying process was the combination of two methods that were found to increase the useful life of food including drying and rapid freezing. -
Pasteurization
Discovered by Louis Pasteur. He heated foods to a very high temperature and then cooled them quickly. Most of the existing bacteria in the food or drink is killed during pasteurization. -
Irradiation
Irradiation of foods is approved by the USDA. Irradiation is the process of exposing foods to an irradiation field. The foods are considered safe and according to scientists do not absorb any radiation