The degree of vitamin C decline in fruits and vegetables mainly depends on the type of fruits and vegetables and storage conditions. Most fruits and vegetables with high vitamin C content are lost during storage. How much to buy the best fruit to buy, the longer it goes, the worse the nutrition and taste of the fruit. Most fruits can be stored directly in the refrigerator without cleaning, and should be eaten within one week, otherwise they will rot and deteriorate. Fruits such as bananas, pineapples, mangoes, papayas, and lemons need only be kept indoors in cool corners.