Ball milling-octenyl succinylation (BM/OSA) influenced starch structure/properties.
BM/OSA caused structural disruption to starch granule and crystallites.
BM/OSA changed the starch rheological behavior from pseudo-plastic to Newtonian.
BM/OSA enhanced starch paste stability during shear, heating and cooling.
BM/OSA reduced paste viscosity and rigidity regardless of substitution degree.