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การเก็ บรั กษาผั กและผลไม้สดโดยการดั ดแปลงสภาพบรรยากาศ 152 The Journal of the Royal Institute of Thailand Vol. 39 No. 2 April-June 2014 Abstract Storage of Fruits and Vegetables under the Controlled and Modified Atmospheres Saichol Ketsa Associate Fellow of the Academy of Science, The Royal Institute, Thailand Fruits and vegetables are perishable after harvest, resulting in a short shelf life. Many physiological and biochemical changes of fruits and vegetables after harvest have led to deterioration and require oxygen. Deterioration can be aggravated under the unfavorable conditions. Technology development has led to creation of modified atmosphere (MA) and controlled atmosphere (CA) storage, resulting in maintaining better quality and longer storage life of fresh produce compared to low temperature alone. Both MA and CA cannot be used to replace low temperature and they must be used to supplement low temperature. Atmospheric conditions under MA cannot be controlled effectively, while atmospheric conditions under CA can be controlled ef - fectively. Prior to usage of MA and CA, one must have basic information associated with levels of oxygen and carbon dioxide, which is specific for cultivar and temperature; otherwise, damage may be rendered to the produce. Keywords: fruit, vegetable, storage, controlled atmosphere, modified atmosphere