PROBLEM TO BE SOLVED: To provide a freshness retaining agent and a freshness retaining method for a plant having excellent safety in the human body upon eating and also capable of retaining a freshness retaining effect for a plant over a long period of time.SOLUTION: There is provided a freshness retaining agent for a plant, which includes calcium oxide and magnesium hydroxide, and in which the weight of the magnesium hydroxide to the calcium oxide is ≥8%. The stem of plant is put in the freshness retaining agent for the plant, in which calcium oxide and magnesium hydroxide are made into aqueous solution, and is grown, or the freshness retaining agent for the plant is sprayed over the leaf surface of the plant.COPYRIGHT: (C)2014,JPO&INPIT【課題】食べた際の人体の安全性に優れ、かつ、植物の鮮度保持効果を長期間維持することができるような植物の鮮度保持剤及び鮮度保持方法を提供すること。【解決手段】酸化カルシウムと水酸化マグネシウムとを含み、酸化カルシウムに対する水酸化マグネシウムの重量が8%以上であるような植物の鮮度保持剤を提供する。酸化カルシウム及び水酸化マグネシウムを水溶させた植物の鮮度保持剤に植物の茎を差して育成する、又は、植物の鮮度保持剤を植物の葉面に噴霧する。【選択図】図1
