spoilage
noun [ U ] uk/ˈspɔɪ.lɪdʒ/ us/ˈspɔɪ.lɪdʒ/
（食物）腐败，变质;变质的食物
the process in which food or other substances stop being good enough to eat or use, or the waste produced in this process
The refrigerator air purifier reduces food spoilage and waste. 冰箱里的空气净化器可以减少食物的变质和浪费。