The nutritional value of bananas differs depending on whether they are fresh or dehydrated. Note that all dried fruits are lower in many nutrients and higher in calories when compared to the same amount of fresh produce. However, dehydration removes over 70% of a banana’s mass, which means that one cup of fresh fruit equals less than half a cup of dried product.
When compared ounce per ounce, dried bananas have about four times the same amount of potassium, carbs, and fiber. However, they have less vitamins B and C because those are water-soluble elements.