Oxidation and degradation of native wheat starch by acidic bromate in water at room temperature

► We have showed that bromate oxidation at room temperature produced water-soluble oxidized starch. ► Reaction time and concentration effect to oxidation degree and length of the chain. ► NMR studies indicated that oxidized groups were in C-2, C-3 and C-6 positions. ► HPLC-ELSD verified the degradation of starch under oxidation.