PROBLEM TO BE SOLVED: To provide a packaging bag that can prevent a reduction in product value caused by accumulation of water inside the package which is a problem of a conventional MA packaging, can be cooled by vacuum cooling method, and has an excellent freshness maintaining effect by both of the freshness maintaining effects of the MA packaging and the reduction of a product temperature.SOLUTION: A fruit and vegetable freshness maintaining packaging bag is made of a transparent synthetic resin film having a thickness of 15-150 &mum, and has 1 to 20 holes, each having an opening area of 0.3-10 mm2. Within 24 hours after packaging fruits and vegetables, an oxygen concentration inside the package is 3-18 vol%, and a carbon dioxide concentration is 3-18 vol%, respectively, by breathing of the fruits and vegetables themselves.COPYRIGHT: (C)2011,JPO&INPIT【課題】 従来のMA包装では問題であった包装内に水がたまることによる商品価値の低下を防ぎ、かつ、真空予冷法による冷却が可能で、MA包装と品温の低下による両方の鮮度保持効果により、優れた鮮度保持効果を有する包装袋に関するものである。【課題手段】厚み15~150μmの透明な合成樹脂フィルムよりなり、孔1個の開口面積0.3~10mm2の孔を1~20個有する青果物包装袋において、青果物を包装後24時間以内に、青果物自身の呼吸により包装内の酸素濃度が3~18vol%、炭酸ガス濃度が3~18vol%となる青果物鮮度保持包装袋である。【選択図】 なし
