Incorporation of bioactive dairy hydrolysate influences the stability and digestion behaviour of milk protein stabilised emulsions

Food & Function
Irene McIntyreDolores O'Riordan

Abstract

The physical stability of emulsions containing bioactive ingredients is an important aspect of functional food development. This research investigated the effects of a bioactive dairy hydrolysate with anti-inflammatory effects on the properties of oil-in-water emulsions (23% rapeseed oil and 1.5% w/w protein). This was determined by monitoring the effects of various combinations of sodium caseinate (NaCas) and NaCas hydrolysate (NaCasH) (NaCas : NaCasH; 100 : 0, 40 : 60, 30 : 70, 20 : 80 and 0 : 100) on the physico-chemical characteristics (particle size distribution, microstructure, adsorption of protein to the interface, viscosity and creaming stability) of emulsions. Currently, there is growing interest in designing functional foods that modulate lipid digestion. Therefore, emulsion breakdown and subsequent release of free fatty acids (FFAs) from selected NaCasH stabilised emulsions (40 : 60 and 0 : 100) was monitored during in vitro gastrointestinal digestion and compared to the behaviour of emulsions stabilised by NaCas alone. Inclusion of NaCasH generally decreased the stability of the emulsions except when added at a NaCas : NaCasH ratio of 40 : 60 which resulted in emulsions with equivalent stability to the NaCas stabil...Continue Reading

References

Apr 20, 2001·Journal of Agricultural and Food Chemistry·S A HoganM O'Sullivan
Oct 16, 2001·Journal of Agricultural and Food Chemistry·C van der VenA G Voragen
Jan 1, 2009·Progress in Lipid Research·Harjinder SinghDavid Horne
Jan 5, 2011·Colloids and Surfaces. B, Biointerfaces·Amir Malaki NikMilena Corredig
Jan 18, 2011·Advances in Colloid and Interface Science·Julia Maldonado-ValderramaAlan Mackie
Apr 30, 2013·Protein Science : a Publication of the Protein Society·Md Zahid KamalNalam Madhusudhana Rao
Sep 1, 2016·Saudi Journal of Biological Sciences·D P MohantyP S Sahu

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Methods Mentioned

BETA
Gel Filtration
light microscopy

Software Mentioned

SPSS
Xli cap

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