Debranching and autoclaving processes of banana starch were carried out for obtaining a resistant starch-rich powder with functional
characteristics. Debranching was carried out using pullulanase for 24 h and the autoclaving was done at 121 C for 30 min, the samples
were then cooled down and stored between 24 and 48 h, and temperatures between 4 and 60 C. The resistant starch level increased due
to the debranching and autoclaving processes. The water absorption index values decreased when the storage time increased, pattern that
agrees with the higher RS content. The water solubility index (WSI) was affected by the storage temperature but not by the storage time.
The autoclaved sample was hydrolyzed to a lesser extent than native starch. The RS-rich powder presented also crystallinity because the
process of autoclaving and storage induced starch retrogradation. The procedure proposed might be used for production of a RS-rich
powder from banana starch with high RS level and functional properties.