Rhizomes, pure starch and substitute starches are different products
Fresh, chilled, frozen or dried high-starch roots and tubers belong to a different commercial form from the separated starch traded as arrowroot flour or powder. India's current FSSAI cereal-products chapter defines arrowroot as separated and purified starch from the rhizomes of Maranta arundinacea or Curcuma angustifolia. European customs explanatory material also shows that the root category called arrowroot can include several botanical sources by origin. Atlas therefore retains product form, botanical source, native or modified status and intended use before comparing specifications or value.