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Use of the Rapid‐Visco‐Analyzer to Measure Starch Pasting Properties. Part I: Effect of Sugars

1989; Wiley; Volume: 41; Issue: 12 Linguagem: Inglês

10.1002/star.19890411205

2192-4236

Lynn B. Deffenbaugh, C. E. Walker,

Microbial Metabolites in Food Biotechnology

Abstract The Rapid Visco‐Analyzer (RVA) was used to measure the effects of dextrose, sucrose, corn syrup solids and polydextrose on maize, tapioca and wheat starch pasting properties. The addition of 1 part sugar: 1 part starch tended to decrease peak viscosity, whereas peak viscosity increased at higher sugar concentrations (up to 4 parts sugar: 1 part starch). Time to onset of viscosity increase and time to peak viscosity increased as sugar concentrations increased. Dextrose, sucrose and corn syrup solids increased the maximum setback viscosity, of the starches, but polydextrose reduced setback viscosity. As the molecular weights of the sugars increased, the effects generally increased for maize and tapioca starches but not for wheat starch. Pasting property parameters measured in the RVA concurred with data obtained using other viscometers or by other techniques previously reported. The RVA is useful as an alternative tool for studying starch pasting properties and the effects of food ingredients on starch performance.