wie viele ballaststoffe hat eine banane — what does this mean exactly?

The question means: 'How much fiber does a banana have?' A medium banana (about 100–120 g) contains roughly 2.6–3.1 g of dietary fiber. The amount varies with ripeness: green bananas are higher in resistant starch (a type of fiber), while ripe bananas contain more soluble fiber like pectin. Fiber supports digestion, blood sugar regulation, and gut health. This is well-established in nutritional science (e.g., USDA FoodData Central). Caveat: individuals with sensitive digestion may tolerate less ripe bananas better.