Pineapple can stay overnight. Pineapple should be soaked in light salt water and refrigerated during storage. Pineapple is best eaten like this. If pineapple slices are stored overnight, if they go bad or black, don't eat them. The cut pineapple can be stored for 2 days at about 7 ℃. If the pineapple is not cut, it can be stored in dark at room temperature.
 1、 Can I stay overnight without finishing pineapple
 Whether pineapple can be eaten after cutting depends on the situation. Generally speaking, it can be eaten after being preserved. For example, cut pineapples are sealed with plastic wrap and stored in refrigerator overnight without deterioration. Pineapple is generally soaked in salt water for a period of time. The salt itself has a disinfection effect and is not easy to deteriorate.
 If the pineapple turns black overnight, has a peculiar smell, and there is a lot of mucus in the water, it is recommended not to eat it, because the pineapple also contains a lot of sugar, which is easily soluble in water. Overnight can promote the growth of bacteria. Eating it will cause diarrhea, abdominal pain and other physical discomfort.
 How to preserve pineapple overnight?
 Pineapple slices are best wrapped overnight in a fresh-keeping bag. If you can't finish eating at the beginning, don't peel off the skin. In case of skin, pineapple can be sealed with a fresh-keeping bag and refrigerated overnight.
 If pineapple slices are soaked in light salt water, it is better to eat them quickly. Pineapple soaked in water for more than 12 hours will slowly become soft and taste will decline.
 The whole pineapple should not be refrigerated.
 If it is a complete and unopened pineapple, do not put it in the refrigerator to refrigerate, just put it at room temperature, and avoid exposure to the sun and moisture. It's OK to put it in a cool and ventilated environment for 2-3 days.