Depending on the plant source starch fall into two different families: grain starches, such as wheat flour and corn (maize) starch, and root and tuber starches, such as arrowroot, tapioca, and potato. In general, starch contains about 25 percent amylose and 75 percent amylopectin (see Table T07-2-1), and grain-derived starches have a higher percentage of amylose as compared to tuber-derived starches. "Waxy" starches, such as waxy corn starch consists of entirely amylopectin.