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Predicting puff pastry margarine performances based on LAOS output.

A Chakraborty1, C Blecker1, V Van Hoed2

  • 1Gembloux Agro-Bio Tech TERRA University of Liège Avenue de la Faculté d'Agronomie 2B, Gembloux 5030, Belgium.

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Summary

Large Amplitude Oscillatory Shear (LAOS) effectively differentiates lamination margarines, outperforming traditional tests. This nonlinear rheology method accurately predicts baking performance by capturing subtle viscoelastic property variations.

Keywords:
HardnessLAOSLamination margarineLinear rheologyMaturation temperaturesNon-linear rheologyPuff pastry margarineSAOSSFCThumb test

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Area of Science:

  • Food science and technology
  • Materials science
  • Rheology

Background:

  • Laminated pastries require specific margarine properties.
  • Traditional methods like solid fat content (SFC) and hardness lack sensitivity for subtle margarine variations.
  • Existing methods fail to capture non-linear behavior crucial for lamination.

Purpose of the Study:

  • To introduce and validate Large Amplitude Oscillatory Shear (LAOS) for characterizing lamination margarines.
  • To demonstrate LAOS's ability to detect subtle differences traditional methods miss.
  • To correlate nonlinear rheological properties with baking performance.

Main Methods:

  • Application of Large Amplitude Oscillatory Shear (LAOS) rheology.
  • Characterization of viscoelastic and plastic properties of margarines.
  • Comparison of LAOS results with traditional methods (SFC, hardness, small amplitude oscillatory rheology, sensory tests).

Main Results:

  • LAOS precisely differentiated margarines with minor processing and maturation variations.
  • LAOS identified subtle viscoelastic differences missed by traditional techniques.
  • LAOS results showed strong correlation with observed baking performance.

Conclusions:

  • LAOS is a superior method for characterizing lamination margarines.
  • Nonlinear rheology, specifically LAOS, is crucial for predicting margarine behavior in baking.
  • LAOS enables optimization of margarine formulation and processing for improved baking outcomes.