Bananas do not keep well, a day maybe two.
Mashed potatoes can be kept in the refrigerator for up to 5-7 days before they spoil.
In light, because in a refrigerator bacteria is less likely to survive as long as outside of a refrigerator
it will be 2weeks
Crab salad should keep safely in the refrigerator for three to four days.
Cauliflower should be safe for 1 week if stored in the refrigerator.
You can keep a fresh turkey in the refrigerator for up to 2 days before cooking it.
If you mean a cut open fruit, no. Both are slowed with application of lemon juice.
How long can you store mashed sweet potato in the fridge
about an hour or two.
Until it evaporates
6 months
1 week