The gelatinisation temperatures shifted to highervalues and the enthalpy of gelatinisation increasedwith the addition of trehalose, glucose, fructose,and sucrose. The extent of increase followed theorder: fructose < glucose < trehalose < sucrose forCS, and fructose < trehalose < sucrose < glucosefor TS.Sugars of lower molecular weights (glucose andfructose) were less effective in the reduction ofretrogradation than those of higher molecularweights (sucrose or trehalose). Trehalose retardedthe retrogradation of both corn and tapioca starchunder all conditions investigated. Sucrose had sameeffect on corn starch retrogradation. The effectsof other sugars depended on the type of starch,storage period, and storage temperature.