To maintain the freshness in response to temperature changes in the The present invention packaged fruit and vegetables or flowering plants It can be, and to provide a freshness retaining materials for fruits and vegetables, or flowering plants which can ensure safety. A to suppress the deterioration of the fruit and vegetables or flowering plants, safe additive 2 be orally or skin contact, and retention of porous fruits and vegetables or flowering plants made by being carried on the carrier 3 of freshness It is a wood one. Additive 2 is formed by sealed by being carried on the carrier 3 has been made with the particles form between the two sheet-shaped packaging material 4. Additive 2 is formed by supporting on the carrier 3 has been made with the particulate or sheet form. Carrier 3 is made from coconut shell activated carbon.BACKGROUND 1【課題】包装された青果物または花卉類の温度変化にも対応して鮮度を保持することができ、かつ、安全性を確保することができる青果物または花卉類の鮮度保持材を提供する。【解決手段】青果物または花卉類の劣化を抑制し、経口または皮膚接触しても安全な添加剤2が、多孔質の担持体3に担持されてなる青果物または花卉類の鮮度保持材1である。添加剤2が、粒子状となされた担持体3に担持されて2枚のシート状の包材4間に封入されてなる。添加剤2が、粒子状又はシート状となされた担持体3に担持されてなる。担持体3がヤシ殻活性炭からなる。【選択図】図1