PROBLEM TO BE SOLVED: To provide a cut flower longevity agent and production method therefor in which: the dispersion state is stable there is no deterioration with the lapse of time there is no fear of decrease in the antimicrobial property stable antibacterial action is obtained it is easy to produce and can be synthesized safely and that is environmentally conscious type.SOLUTION: A cut flower longevity agent contains a composite formed by combining a metal fine particle formed of 1 or more kind metal or compound of said metal and 1 or more kind micronized cellulose, and in which the combined state between metal fine particle and micronized cellulose is in a bonded inseparable state.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】分散状態が安定し、経時的に劣化がなく、抗菌性が低下する恐れがない、安定した抗菌作用が得られ、製造が簡単でかつ安全に合成でき、環境調和型の切り花延命剤および切り花延命剤の製造方法を提供すること。【解決手段】1種類以上の金属、又は前記金属の化合物により形成した金属微粒子と、1種類以上の微細化セルロースとを複合化した複合体を含有し、金属微粒子と微細化セルロースとの複合化が、結合した不可分の状態であること。【選択図】なし
