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Phytosterol-based oleogels self-assembled with monoglyceride for controlled volatile release.

Dan-Xia Yang1, Xiao-Wei Chen1, Xiao-Quan Yang1,2

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Area of Science:

  • Food science and material science
  • Colloid and interface science

Background:

  • Oleogels offer a healthier alternative to saturated/trans-fats and can deliver functional ingredients.
  • Phytosterols, natural plant compounds, are ideal for producing healthy and natural oleogels.

Purpose of the Study:

  • To investigate the self-assembly of phytosterol-based oleogels with monoglycerides.
  • To explore the tuning of volatile release through microstructure control in these oleogels.

Main Methods:

  • Fabrication of bicomponent oleogels using β-sitosterol and monoglyceride.
  • Characterization using microscopy, differential scanning calorimetry, and small-angle X-ray scattering.
  • Evaluation of volatile release under dynamic and static conditions.

Main Results:

  • Formation of a controllable 3D network and spherulitic microstructures via intermolecular hydrogen bonds.
  • Demonstrated tunable control over release rate, maximum concentration, and partition coefficients.
  • Observed thixotropic and thermoresponsive behaviors in the solid-like oleogels.

Conclusions:

  • Phytosterol-monoglyceride self-assembly, driven by hydrogen bonding, creates functional oleogels.
  • These oleogels provide a tunable and promising strategy for delivering flavor compounds.
  • The study highlights the potential of engineered oleogel microstructures for controlled release applications.