Effect of polydextrose-substitution on the cell structure of the high-ratio cake system was investigated in terms of the bubble size
distribution andfoam drainage time of the cake batter, andthe cake height, true andbulk densities, porosity, cell size and shape
distributions of the cake crumb. Sugar-replacement levels were 0%, 25%, 50%, 75%, and 100% of the sugar content of the
conventional high-ratio cake formulation.
Polydextrose-substitution resulted in a uniform bubble size distribution within the cake batter. Bubble size distribution was
similar to that of the conventional high-ratio cake even at the full-replacement level. Polydextrose-substitution resulted in a
significant decrease in foam drainage time above the 50% sugar-replacement level.
Increase in polydextrose-substitution affected expansion properties significantly by favoring the formation of small, sphere-like
cells with diminishing interconnectivity. Polydextrose-substitution influenced crumb color significantly due to Maillard reactions.
Cell structure of the crumb at the 25% sugar-replacement level was similar to that of the conventional high-ratio cake. A product
similar to the high-ratio cake with respect to the batter characteristics, porosity, andcell size andshape distributions was obtainedat
the 25% sugar-replacement level resulting in 18.75% calorie reduction based on the sugar content of the conventional formulation.
r 2003 Swiss Society of Food Science and Technology. Published by Elsevier Science Ltd. All rights reserved