A food preservation system can include a gas (e.g., oxygen) permeable package having at least one oxygen permeable member defining a package chamber therein, and a silverized biomass in the package chamber of the oxygen permeable package. Another food preservation system can include a container having an internal chamber, and an oxygen permeable divider located in the internal chamber so as to divide the internal chamber into a first chamber and a second chamber. The first chamber can being configured for receiving food therein, and a silverized biomass is located in the second chamber. A method of preserving food can include retaining a food in a container that includes silverized biomass such that the food does not contact the silverized biomass. The silverized biomass can have a combination of silver and biomass.
