| 摘要 |
PROBLEM TO BE SOLVED: To suppress the reduction in the freshness of food items by making effective use of carbon dioxide produced in a photocatalytic reaction.SOLUTION: A glass member 70 in which a photocatalyst layer 71 is formed is attached, via a seal member 72, to a ceiling 42 of a decompression storage chamber 24 provided in a cold room of a refrigerator. A light source 80 is disposed above the glass member 70 via a small clearance. When an LED 83 of the light source 80 is turned on, light from the LED 83 is transmitted by the glass member 70 and incident on the photocatalyst layer 71. As a result, the photocatalyst layer 71 produces radicals from water or the like and the radicals decompose gas or the like from a food item into carbon dioxide and water. Increasing the carbon dioxide concentration of the storage chamber 24 suppresses the respiration of vegetables, suppresses enzyme reactions of meat and fish, and further suppresses proliferation of microorganisms. |
