WORLDWIDE USE OF HERMETIC STORAGE FOR THE PRESERVATION OF AGRICULTURAL PRODUCTS

Abstract

This paper discusses various forms of hermetic storage and transport, which preserve dried commodities such as grains (rice, maize, beans, wheat), silage, coffee, cocoa and seeds. Discussed are its limitations, and the expanding needs of 5 continents and 90 countries that use hermetic storage. Hermetic storage has proven especially effective in hot, humid climates to combat frequent, devastating post harvest losses and prevent the growth of mold related aflatoxins, a major public health hazard. With hermetic storage systems, post harvest losses are reduced to < 1% in hot, humid climates; this is in marked contrast to conventional storage systems requiring pesticides or refrigeration, which often reach 25% losses or more. Scientific information based on insect and commodity respiration, as well as the use of injected CO2 (in some cases) to more rapidly decrease oxygen levels, is now a superior alternative to refrigeration for multi-month seed preservation. Finally, the paper addresses the cost effectiveness of hermetic storage versus alternative storage systems.