Starch nanoparticles formation via high power ultrasonication

► Nano-sized starch particles (NSP) were prepared using a purely physical. ► The starch nanoparticles were obtained by high-intensity ultrasonication at low temperature. ► The nanosized character was confirmed by DLS and FE-SEM observation. ► The present approach leads to a high yield in nanoparticles and do not require any chemical treatment.