This work clarified that the gelatinization and retrogradation
characteristics of the RS were largely modified by
the spent brewer’s yeast BG addition and the extent of this
effect depended upon the BG content. The high thickening
and water-holding capacities of the BG itself were hypothesized
to be responsible for an increase in viscosity of the
RS/BG mixed suspensions during pasting and a retardation
of retrogradation, syneresis production, gel network
formation and gel strength development of the RS/BG
mixed gels during refrigerated storage. The effect was more
pronounced at higher concentrations of BG. The spent
brewer’s yeast BG thus provides a potentially valuable
addition to starch-based foods to restrict retrogradation
of the starch.