The effect of two hydrocolloids, the overall composition and stirring rate of a confectionery semi-liquid
syrup model, were studied by means of the measure of rheological properties, instrumental texture evaluation
and turbidity. A syrup model was made with sucrose, high fructose corn syrup, gum (dextran or
carrageenan), citric acid and water. An experimental design based on Taguchi’s method was employed to
evaluate the influence of sugar concentration, gum type, gum concentration, citric acid concentration and
stirring rate. An analysis of variance was performed. From all evaluated properties (except turbidity),
Brix was the factor that showed the maximum influence, with higher values on textural properties
(adhesive force, cohesive work and stringiness). The gum type had influence over viscosity, hardness,
adhesive force and turbidity. The Newtonian behavior predominated in the syrups and viscosity of samples
was affected by the variables studied. The mean values of viscosity, hardness and adhesive force for
all samples with carrageenan were higher than those obtained with dextran (at both Brix levels).
Effect of formulation and processing conditions on the rheological and textural
properties of a semi-liquid syrup model