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Title of Journal: Rheol Acta

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Abbravation: Rheologica Acta

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Springer-Verlag

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10.1007/bf01008317

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1435-1528

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Can dynamical mechanical measurements predict brit

Authors: Gaëlle Roudaut Fabienne Poirier Denise Simatos Martine Le Meste
Publish Date: 2004/06/25
Volume: 44, Issue: 1, Pages: 104-111
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Abstract

The uptake of water by low moisture cereal products can have detrimental effects on their texture and cause loss of quality Following the interest in developing techniques suitable for determining texture properties there has also been a move towards identifying the origins of the observed changes Although the origins of the hydration effects are not fully understood dynamic rheology is believed to be a suitable technique for characterising mechanical properties and for identifying the origins of the features observed after moisture pickup In a previous paper the sensory crispness of white bread and of extruded flat bread were correlated with tanδ through the increase in tanδ resulting from the increased hydration associated with loss of crispness The present work shows that such a correlation does not exist with extruded starchsugar samples This means that tanδ data cannot be used to predict fracture properties like those “covered” by crispness The information revealed by the results did however address various questions about the significance of tanδ Indeed the increase in tanδ with increasing hydration was shown to be particularly acute when the starch was mixed with sugar sucrose or fructose In order to interpret these results several hypotheses have been suggested including increased heterogeneity of the systems and sensitivity of tanδ to solute mobility or to localised motions of the matrix


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  1. Effect of morphology on the interfacial slip of immiscible polypropylene/polystyrene blends
  2. Amorphous and crystalline states of ultrasoft colloids: a molecular dynamics study
  3. A hierarchical multi-mode MSF model for long-chain branched polymer melts part II: multiaxial extensional flows
  4. Novel bitumen/isocyanate-based reactive polymer formulations for the paving industry
  5. Self-reinforcement of polymers as a consequence of elongational flow
  6. The role of convective constraint release in parallel superposition flows of nearly monodisperse entangled polymer solutions
  7. Influence of the initial cooling temperature on the gelation and yield stress of waxy crude oils
  8. Molecular architecture and linear viscoelasticity of homogeneous ethylene/styrene copolymers
  9. Flow analysis of the weld line formation during injection mold filling of thermoplastics
  10. Squeeze flow of soft solids between rough surfaces
  11. Molecular orientation in non-Newtonian flow of dilute polymer solutions around spheres
  12. The contribution of frictional contacts to the shear strength of coarse glass bead powders and slurries
  13. End effects in rotational viscometry II. Pseudoplastic fluids at elevated Reynolds number
  14. Rheological behaviour of a high-melt-strength polypropylene at elevated pressure and gas loading for foaming purposes
  15. The effect of premature wall yield on creep testing of strongly flocculated suspensions
  16. Rheological and morphological properties of PA6/ECO nanocomposites
  17. Orientation distribution in injection molding: a further step toward more accurate simulations
  18. Fractal analysis of viscoelastic data with automated gel point location and its potential application in the investigation of therapeutically modified blood coagulation
  19. Modeling confinement in polymer nanocomposites from linear viscoelasticity data
  20. Linear viscoelasticity of styrenic block copolymers–clay nanocomposites
  21. On exact solutions of the flow equations for Bingham visco-plastic fluids through an eccentric annular cross-section
  22. A computational extensional rheology study of two biofluid systems
  23. Power-law creep and residual stresses in a carbopol gel
  24. Electrorheological response of SnO 2 and Y 2 O 3 nanoparticles in silicon oil
  25. Generation of inkjet droplet of non-Newtonian fluid
  26. Scaling and mesostructure of Carbopol dispersions
  27. Study of the non-isothermal glass fibre drawing process
  28. Influence of molecular parameters on the stress dependence of viscous and elastic properties of polypropylene melts in shear
  29. An error-minimizing approach to inverse Langevin approximations

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