Enhancing bioactive peptide release and identification using targeted enzymatic hydrolysis of milk proteins

Alice B. Nongonierma, Richard J. FitzGerald

Research output: Contribution to journalReview articlepeer-review

Abstract

Milk proteins have been extensively studied for their ability to yield a range of bioactive peptides following enzymatic hydrolysis/digestion. However, many hurdles still exist regarding the widespread utilization of milk protein-derived bioactive peptides as health enhancing agents for humans. These mostly arise from the fact that most milk protein-derived bioactive peptides are not highly potent. In addition, they may be degraded during gastrointestinal digestion and/or have a low intestinal permeability. The targeted release of bioactive peptides during the enzymatic hydrolysis of milk proteins may allow the generation of particularly potent bioactive hydrolysates and peptides. Therefore, the development of milk protein hydrolysates capable of improving human health requires, in the first instance, optimized targeted release of specific bioactive peptides. The targeted hydrolysis of milk proteins has been aided by a range of in silico tools. These include peptide cutters and predictive modeling linking bioactivity to peptide structure [i.e., molecular docking, quantitative structure activity relationship (QSAR)], or hydrolysis parameters [design of experiments (DOE)]. Different targeted enzymatic release strategies employed during the generation of milk protein hydrolysates are reviewed herein and their limitations are outlined. In addition, specific examples are provided to demonstrate how in silico tools may help in the identification and discovery of potent milk protein-derived peptides. It is anticipated that the development of novel strategies employing a range of in silico tools may help in the generation of milk protein hydrolysates containing potent and bioavailable peptides, which in turn may be used to validate their health promoting effects in humans. [Figure not available: see fulltext.].

Original languageEnglish
Pages (from-to)3407-3423
Number of pages17
JournalAnalytical and Bioanalytical Chemistry
Volume410
Issue number15
DOIs
Publication statusPublished - 1 Jun 2018

Keywords

  • Bioactive peptides
  • Enzyme hydrolysis
  • In silico
  • Milk proteins
  • Peptide identification
  • Quantitative structure activity relationship (QSAR)

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