Oxygen absorbers are used as a life extender for food storage because they help to remove or reduce the oxygen present in food storage containers, which can cause spoilage and degradation of food over time. Oxygen is essential for many forms of life, including bacteria and mold, which can cause food to spoil, go rancid, or become contaminated. By reducing the oxygen levels in the storage container, the growth of bacteria and mold is inhibited, which can significantly extend the shelf life of food.
Oxygen absorbers contain a mixture of iron powder, salt, and other materials that react with the oxygen in the container to form iron oxide, a harmless and inert material. The process of absorbing oxygen is known as oxidation, and it helps to create an oxygen-free environment in which the food can be stored safely. The use of oxygen absorbers can also help to maintain the flavor, color, and texture of food, as well as prevent the growth of insects or pests.
However, it's essential to note that oxygen absorbers are not a substitute for proper food storage techniques, such as storing food in airtight containers, keeping it at the correct temperature, and handling it safely. Oxygen absorbers are merely a tool to help preserve the quality and freshness of food during storage, and they should be used in conjunction with other best practices for food storage to ensure the safety and longevity of the food.