PROBLEM TO BE SOLVED: To provide a packaging technology capable of keeping the freshness of Shimeji mushrooms for a long period while maintaining the appearance of a package.SOLUTION: Provided is the package containing fungus in an internal space of a packaging bag made of a synthetic resin film under a deaerated condition. An oxygen permeation amount of the package containing the fungus is 55 cc/100 g day atm or more and 426 cc/100 g day atm or less, per 100 g of the fungus, at 23°C and 60% RH, and a relation of Tc≥To is satisfied under the condition of: To being an oxygen permeation amount of the package containing the fungus, per 100 g of the fungus, at 23°C and 60% RH and Tc being a carbon dioxide permeation amount of the package containing the fungus, per 100 g of the fungus, at 23°C and 60% RH.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】包装体の外観を保持しつつ、シメジの鮮度を長期間保持することが可能な包装技術を提供する。【解決手段】脱気状態にある合成樹脂フィルムからなる包装袋の内部空間に菌茸類が収容されている菌茸類入り包装体であって、当該菌茸類入り包装体の23℃、60%RHにおける菌茸類100gあたりの酸素透過量が、55cc/100g・day・atm以上426cc/100g・day・atm以下であり、菌茸類入り包装体の23℃、60%RHにおける菌茸類100gあたりの酸素透過量をToとし、菌茸類入り包装体の23℃、60%RHにおける菌茸類100gあたりの二酸化炭素透過量をTcとしたとき、Tc≧Toの関係が成り立つ。【選択図】なし
