Effect of sugar beet fiber concentrations on rheological properties of meat emulsions and their correlation with texture profile analysis
The effect of sugar beet fiber (SBF) concentration on the rheological properties of meat emulsions was determined. In addition, texture profile analysis (TPA) of cooked meat emulsions was carried out to find a possible relationship between the dynamic rheological data and TPA parameters. All studied emulsions exhibited non-Newtonian, pseudoplastic behavior since apparent viscosity decreased with increasing shear rate. The Ostwald–de Waele model was successfully used to describe the flow properties of meat emulsions (R2 > 0.913). Emulsion systems were characterized as weak gel-like macromolecular dispersions with storage modulus (G?) much greater than loss modulus (G?). A modified Cox–Merz rule was applied by multiplying angular frequency with shift factors (?SF). Material stiffness parameter (A?) calculated from complex modulus (G*) increased as SBF concentration increased. Significant correlations among the material stiffness data and TPA parameters were observed. It was concluded that TPA parameters could be predicted by using dynamic shear tests, and hence, this will make possible to save time and cost for meat processors when manufacturing a product with acceptable structural or textural characteristics. © 2016 Institution of Chemical Engineers
SourceFood and Bioproducts Processing
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