Chemical composition,particle morphology,crystal structure,thermodynamic properties,solubility,degree of expansion,paste clarity,and freeze-thaw stability of maca root starch were compared with those of potato and Chinese yam starches.Maca starch granules were oval or irregular.The long axis of these granules ranged between 7.2 and 15.6 μm and short axis ranged between 5.1 and 9.8 μm.A square cross was observed for the polarization cross of maca starch.X-Ray powder diffraction showed that maca starch had C-...