PROBLEM TO BE SOLVED: To provide a packaging bag with a superior freshness keeping characteristic effected by using this MA packaging and by lowering a product temperature because the MA packaging prevents the degradation of a product value caused by moisture collected in packaging, which is a problem related to a conventional one, and cools a product using a vacuum precooling method.SOLUTION: This vegetable and fruit freshness keeping packaging bag is made of a transparent synthetic resin film whose thickness is 15-150 μm and which is formed with 1-20 holes having an open area between 0.3-10 mm2 each. Within 24 hours after a vegetable or fruit is packaged, the oxygen concentration in the packaging amounts to 3-18 vol.% and the carbon dioxide concentration of 3-18 vol.% by the respiration of the vegetable or the fruit.COPYRIGHT: (C)2013,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。【解決手段】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
