Impact of salt and lipid type on in vitro digestion of emulsified lipids

► NaCl additions to emulsified lipids induced bridging flocculation before in vitro digestion. ► There was no bridging flocculation in all emulsified lipids after in vitro digestion. ► Mean particle size prepared with lard was smaller than those of other emulsified lipids. This study examined the ef...

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Veröffentlicht in:Food chemistry 2011-06, Vol.126 (4), p.1559-1564
Hauptverfasser: Hur, Sun Jin, Joo, Seon Tea, Lim, Beong Ou, Decker, Eric A., McClements, Julian D.
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container_end_page 1564
container_issue 4
container_start_page 1559
container_title Food chemistry
container_volume 126
creator Hur, Sun Jin
Joo, Seon Tea
Lim, Beong Ou
Decker, Eric A.
McClements, Julian D.
description ► NaCl additions to emulsified lipids induced bridging flocculation before in vitro digestion. ► There was no bridging flocculation in all emulsified lipids after in vitro digestion. ► Mean particle size prepared with lard was smaller than those of other emulsified lipids. This study examined the effects of oil type and NaCl addition on the micro-structural changes that occur to emulsified lipids as they pass through a model gastrointestinal tract (GIT). Oil-in-water emulsions stabilized by a non-ionic surfactant (Tween 20) were prepared using different kinds of lipids (3% soybean oil, corn oil, olive oil or lard). The emulsified lipids were passed through an in vitro digestion model that simulated the composition (pH, minerals, surface active components, and enzymes) of the human GIT. Prior to digestion, emulsified lipid droplets appear to be bridging flocculation in 1% NaCl added emulsified lipids, moreover lipid droplets of 1% NaCl added emulsified lipids seems to be more disrupted than no NaCl added emulsified lipids. Mean particle size prepared with lard was smaller than those of other emulsified lipids. Free fatty acid contents increased after in vitro digestion in all emulsified lipids. Especially, free fatty acid content of emulsified lipid made from lard and olive oil were significantly higher than those of other emulsions after in vitro digestion.
doi_str_mv 10.1016/j.foodchem.2010.12.003
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source Elsevier ScienceDirect Journals Complete
subjects Biological and medical sciences
Confocal microscopy
Emulsified lipids
emulsions
fatty acid composition
flocculation
food analysis
food composition
Food industries
Free fatty acid
free fatty acids
Fundamental and applied biological sciences. Psychology
In vitro digestion
lipids
microstructure
oil-water interface
particle size
salt content
sodium chloride
title Impact of salt and lipid type on in vitro digestion of emulsified lipids
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