Starch % Amylose Potato 20 Wheat, Corn 25 Tapioca, Rice 17 Waxy Corn 0-3 Most common starches are: 25% amylose - 75% amylopectinStarch % Amylose Potato 20 Wheat, Corn 25 Tapioca, Rice 17 Waxy Corn 0-3 Most common starches are: 25% amylose - 75% amylopectin