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Related Experiment Videos

Proposing sequences for peptides derived from whey fermentation with potential bioactive sites.

M A Belem1, B F Gibbs, B H Lee

  • 1Department of Food Science and Agricultural Chemistry, McGill University, Ste.-Anne-de-Bellevue, PQ, Canada.

Journal of Dairy Science
|April 9, 1999
PubMed
Summary

Kluyveromyces marxianus fermentation converts whey proteins into bioactive oligopeptides. Analysis suggests these peptides, including beta-lactorphin, may possess antihypertensive properties, offering potential health benefits.

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Area of Science:

  • Biotechnology
  • Food Science
  • Biochemistry

Background:

  • Whey proteins are a rich source of peptides.
  • Kluyveromyces marxianus is a yeast with known protein-degrading capabilities.
  • Bioactive peptides derived from food proteins hold potential health benefits.

Purpose of the Study:

  • To investigate the production of bioactive peptides from whey proteins using Kluyveromyces marxianus.
  • To analyze the peptide sequences generated during fermentation for potential bioactivity.
  • To assess the antihypertensive potential of fermentation-derived oligopeptides.

Main Methods:

  • Fed-batch fermentation of Kluyveromyces marxianus in whey-based media.
  • High-performance liquid chromatography (HPLC) for protein and oligopeptide analysis.

Related Experiment Videos

  • API mass spectrometry for peptide sequencing and identification.

    • Main Results:

    • Whey proteins were effectively converted into oligopeptides during fermentation.
    • Oscillatory protein degradation and continuous oligopeptide production were observed.
    • Two potential bioactive peptide sequences were proposed, including beta-lactorphin (YLLF).

    Conclusions:

    • Kluyveromyces marxianus fermentation is a viable method for producing oligopeptides from whey.
    • The identified peptides, particularly beta-lactorphin, suggest potential antihypertensive properties.
    • This study opens avenues for developing functional foods and nutraceuticals from whey protein.