A banana contains approximately 1–1. 5 grams of protein, making it a relatively low protein source compared to other foods like meat, fish, and legumes. Despite this, bananas offer essential nutrients not typically found in animal products, beans, or nuts. Uncover how much protein is in a banana and learn its full nutrition profile, plus key health benefits for energy, digestion, and heart health. 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. 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.
