What is the highest content of protein in food? Carrots, potatoes, corn, soybeans?
The highest content of protein in food should be soybean, with 36.3g of protein, 0.6g of carrot protein, 2.3g of potato protein and 8.4g of corn protein per kloc-0/00g. Next to soybean, peanut kernel (raw) contains 26 grams of protein per100g.