Lipid digestion of oil-in-water emulsions stabilized with low molecular weight surfactants

Food Funct. 2019 Dec 11;10(12):8195-8207. doi: 10.1039/c9fo02210d.

Abstract

Altering sn-fatty acid position of glycerol mono-oleate (GMO) from sn-1 to sn-2 decreases fatty acid bioaccessibility by 25.9% providing possible strategies to tailor lipemic responses of food emulsions. Lipid digestion kinetics and fatty acid bioaccessibility of monomodal O/W emulsions stabilized at their minimum surfactant concentration (0.5 < MSC > 0.7 (w/w)) were studied in the TNO Intestinal Model (TIM-1) gastrointestinal (GI) tract. No significant differences were observed between induction times nor rate constants when using 1-GMO and 1-GMS, Span 60, Tween 60 and Tween 80 as surfactants in O/W emulsions, as determined by fitting a three-parameter shifted logistic model to the cumulative bioaccessibility. Comparable trends were observed between area under the curve (AUC) of the absolute bioaccessibility and total overall bioaccessibility.

MeSH terms

  • Digestion
  • Emulsions / chemistry
  • Emulsions / metabolism
  • Gastrointestinal Tract / chemistry
  • Gastrointestinal Tract / metabolism
  • Kinetics
  • Lipid Metabolism
  • Lipids / chemistry*
  • Models, Biological
  • Molecular Weight
  • Polysorbates / chemistry
  • Polysorbates / metabolism
  • Surface-Active Agents / chemistry*
  • Surface-Active Agents / metabolism
  • Water / chemistry*
  • Water / metabolism

Substances

  • Emulsions
  • Lipids
  • Polysorbates
  • Surface-Active Agents
  • Water