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Bioaccessibility of hydroxytyrosol and n-3 fatty acids as affected by the delivery system: simple, double and gelled double emulsions.

Susana CofradesRicard BouLinda FlaizAlba GarcimartínJuana BenedíRaquel MateosFrancisco J Sánchez-MunizRaúl Olivero-DavidFrancisco Jiménez-Colmenero
Published in: Journal of food science and technology (2017)
This study examines the influence of different food-grade n-3 PUFA-enriched simple emulsion (SE), double emulsion (DE) and gelled double emulsion (GDE) delivery systems on the extent of lipolysis, antioxidant capacity and the bioaccessibility of hydroxytyrosol (HTy). GDE emulsion offered better protection for HTy (89%) than the other systems (79% in SE and DE). The reducing capacity of the emulsions containing HTy were not altered during oral digestion. However, "in vitro" gastric and intestinal phases significantly reduced the antioxidant activity of all systems. The structural and physical state of GDE entailed a slowing-down of triacylglyceride hydrolysis (36.4%) in comparison with that of SE and DE (22.7 and 24.8% for SE and DE, respectively).
Keyphrases
  • fatty acid
  • adipose tissue
  • physical activity
  • mental health
  • health risk assessment
  • risk assessment
  • human health
  • heavy metals