The impact of oat structure and β-glucan on in vitro lipid digestion

Myriam M.L. Grundy, Janina Quint, Anne Rieder, Simon Ballance, Cécile A. Dreiss, Kathryn L. Cross, Robert Gray, Balazs H. Bajka, Peter J. Butterworth, Peter R. Ellis, Peter J. Wilde

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29 Citations (Scopus)
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Abstract

Oat β-glucan has been shown to play a positive role in influencing lipid and cholesterol metabolism. However, the mechanisms behind these beneficial effects are not fully understood.

The purpose of the current work was to investigate some of the possible mechanisms behind the cholesterol lowering effect of oat β-glucan, and how processing of oat modulates lipolysis. β-Glucan release, and the rate and extent of lipolysis measured in the presence of different sources of oat β-glucan, were investigated during gastrointestinal digestion.

Only a fraction of the original β-glucan content was released during digestion. Oat flakes and flour appeared to have a more significant effect on lipolysis than purified β-glucan.

These findings show that the positive action of β-glucan is likely to involve complex processes and interactions with the food matrix. This work also highlights the importance of considering the structure and physicochemical properties of foods, and not just the nutrient content.
Original languageEnglish
Pages (from-to)378-388
Number of pages11
JournalJournal of Functional Foods
Volume38
Issue numberPart A
Early online date21 Sep 2017
DOIs
Publication statusPublished - Nov 2017

Keywords

  • Oat β-glucan
  • Lipolysis
  • In vitro digestion
  • Viscosity
  • Oat structure
  • Molecular weight

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