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Rheological behavior of amylopectin and beta-lactoglobulin phase-segregated aqueous system

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Author

Summary, in English

The rheological behavior of amylopectin-beta-lactoglobulin-water system in the region of incompatibility was studied by performing constant shear rate and oscillatory measurements. Phase-segregated samples were prepared at concentrations that laid over the binodal and tie-lines. The results were interpreted in terms of the isostress and isostrain blending laws. For this purpose the bases of Takayanagi model was used and a modified model considering the gradual formation of double emulsions close to the phase-inversion concentration that explain the transition was proposed. Good agreement between observed and calculated values was obtained using the isostress and isostrain models. Phase segregation and the phase-inversion control the rheological properties of the amylopectin-beta-lactoglobulin mixture in aqueous media. (c) 2008 Elsevier Ltd. All rights reserved.

Department/s

  • Department of Food Technology, Engineering and Nutrition

Publishing year

2008

Language

English

Pages

358-365

Publication/Series

Carbohydrate Polymers

Volume

74

Issue

3

Document type

Journal article

Publisher

Elsevier

Topic

  • Food Engineering

Keywords

  • Takayanagi model
  • phase segregation
  • rheology
  • amylopectin
  • beta-lactoglobulin

Status

Published

ISBN/ISSN/Other

  • ISSN: 0144-8617