Given how much protein in 1 banana is just 1.3g, you would need to consume about 15 bananas to match the protein in one serving of a plant protein powder — clearly impractical and unbalanced. The macronutrient breakdown is 93% carbs, 3% fat, and 4% protein. This is a good source of potassium (9% of your Daily Value) and vitamin b6 (33% of your Daily Value). Potassium: 358 mg Magnesium: 27 mg Nutritional Facts of Banana Almost three-fourths of a banana is water. Specifically, 100 grams of banana contains 75 grams of water. The remaining has 23 per cent carbohydrates and 1 percent protein. The carbohydrate content for a raw banana is constant. In such a case, most of it is starch and very little sugar. One medium-sized banana contains about 1.3g of protein, making it a good source of carbohydrates and natural energy, but not high in protein.
