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Protein cross-linking in food.

J A Gerrard1, S J Meade, A G Miller

  • 1School of Biological Sciences, University of Canterbury, Christchurch, New Zealand. juliet.gerrard@canterbury.ac.nz

Annals of the New York Academy of Sciences
|July 23, 2005
PubMed
Summary

This study investigated how molecular structure affects protein cross-linking in food. Researchers found that highly reactive molecules could alter food texture, suggesting the Maillard reaction can control food properties.

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Area of Science:

  • Food science
  • Protein chemistry
  • Organic chemistry

Background:

  • Protein cross-linking influences food functionality.
  • The Maillard reaction is a key process in food chemistry.
  • Understanding molecular structure-activity relationships is crucial for food modification.

Purpose of the Study:

  • To explore the link between molecular structure and protein cross-linking ability.
  • To determine if this relationship applies within a food matrix.
  • To assess Maillard cross-linking's impact on wheat and soy food texture.

Main Methods:

  • Tested cross-linking ability of small molecules using ribonuclease A and SDS-PAGE.
  • Evaluated reactive molecules in wheat and soy food systems.
  • Correlated functional changes with protein cross-linking.

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Main Results:

  • No straightforward correlation between molecular structure and ribonuclease cross-linking.
  • Only highly reactive molecules effectively cross-linked proteins in the food matrix.
  • Minor cross-linking significantly impacted wheat and soy food properties.

Conclusions:

  • Molecular structure alone does not predict protein cross-linking efficacy.
  • The Maillard reaction, even with limited cross-linking, can modify food texture.
  • This suggests potential for controlling food functionality through controlled Maillard reactions.