Abstract
The steady and dynamic shear viscosity of fish muscle protein paste obtained from Alaska pollock surimi at 95%, 90%, 85%, 80%, and 75% of moisture contents were measured in the temperature range of 5°C to 20°C. To estimate the steady shear viscosity at high shear rate from dynamic shear viscosity, the modified Cox-Merz rule was applied by introducing a frequency shift factor. The concentration dependence of zero-shear viscosity showed power-law dependence with an exponent of 3.5, and the universal behavior of viscosity at different protein concentrations was observed by a introducing reduced variables. The Carreau model was applied to describe the shear- thinning behavior of the surimi paste, and the model parameters estimated empirically showed moisture content dependence. The viscous flow behavior was independent of temperature (5°C to 20°C), and addition of starch decreased the flow index and viscosity of the paste, compared to the pure surimi paste.
Original language | English |
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Pages (from-to) | 133-139 |
Number of pages | 7 |
Journal | Applied Rheology |
Volume | 14 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2004 |
Keywords
- Carreau model
- Cox-Merz
- Dynamic viscosity
- Surimi
- Zero shear viscosity
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics