Keywords: Sucrose solutions; Viscosity; Arrhenius and WLF models; Temperature and concentration effects ..... Data analysis and statistical procedures.
Rheology of supersaturated sucrose solutions M. Quintas a
b
a,*
, T.R.S. Branda˜o a, C.L.M. Silva a, R.L. Cunha
b,1
Laborato´rio de Optimizac¸a˜o de Processos Alimentares, Escola Superior de Biotecnologia, Universidade Cato´lica Portuguesa, R. Dr. Anto´nio Bernardino de Almeida, 4200-072 Porto, Portugal Laborato´rio de Engenharia de Processos, Departamento de Engenharia de Alimentos, Faculdade de Engenharia de Alimentos, UNICAMP, Cidade Universita´ria ‘‘Zeferino Vaz’’, Caixa Postal 6121, CEP 13081-970 Campinas, SP, Brazil
Keywords: Sucrose solutions; Viscosity; Arrhenius and WLF models; Temperature and concentration effects
Abstract Sucrose solutions, with concentrations near or superior to saturation, present high potentialities for the candy and pastry industries. Creep measurements under small stresses were done to obtain the rheological properties of highly concentrated sucrose solutions, since such solutions could be in a metastable state and tend to crystallise. The viscosities of these solutions, from 70.0% to 85.2% (w/w), were determined experimentally at different temperatures, from 0 to 90 C. The temperature dependence of viscosity was studied using experimental and published data for, respectively, high and low concentrations (
