| 摘要 |
<p>PURPOSE:To carry out the subject keeping freshness of plants by blowing the air existing in a box for accommodating vegetables and flowers into a cuprous ion-containing aqueous solution, returning the regenerated air into the box, removing a plant aging promotion hormone, killing various germs and reducing the concentration of oxygen. CONSTITUTION:A freshness-keeping box 1 for accommodating vegetables or fruits is equipped with an air conditioner 2, a tank 3 accommodating a cuprous ion-containing aqueous solution and a pump 4 for sending the air in the box 1 into the tank 3 in the inside thereof. The air containing ethylene generated from vegetables in the freshness-keeping box 1 is blown into the tank 3 accommodating the cuprous ion-containing aqueous solution by the pump 4 so as to rise in bubble. Oxygen contained in the air in the box 1 is allowed to react with the cuprous ion to generate a hydroxy radical. Ethylene contained in the air sent to the tank 3 is reacted with the generated hydroxy radical so as to be decomposed. Various germs in the air are killed at the same time and the air regenerated from the tank 3 is cooled by the air conditioner 2 and returned into the box 1. Thereby, the freshness of plants such as vegetables or flowers can be kept over a long period.</p> |
