Acetylation and oxidation are chemical modifications which alter the properties of starch. The degree of
modification of acetylated and oxidized starches is dependent on the catalyst and active chlorine concentrations,
respectively.
The objective of this study was to evaluate the effect of acetylation and oxidation
on the structural, morphological, physical–chemical, thermal and pasting properties of barley starch.
Barley starches were acetylated at different catalyst levels (11%, 17%, and 23% of NaOH solution) and oxidized
at different sodium hypochlorite concentrations (1.0%, 1.5%, and 2.0% of active chlorine).