Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 533978
Title Tayloring W/O/W emulsion composition for effective encapsulation : The role of PGPR in water transfer-induced swelling
Author(s) Eisinaite, Viktorija; Duque Estrada, Patricia; Schroën, Karin; Berton-Carabin, Claire; Leskauskaite, Daiva
Source Food Research International 106 (2018). - ISSN 0963-9969 - p. 722 - 728.
Department(s) Food Process Engineering
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Double emulsion - Encapsulation - Osmotic pressure - PGPR - Swelling - Water transfer
Abstract The role of the lipophilic surfactant, polyglycerol polyricinoleate (PGPR) in water transfer in food-grade double emulsions was investigated, and related to physical emulsion stability. Double (W/O/W) emulsions were prepared with various PGPR concentrations (0.5–5.0 wt%) in the oil phase, at initial osmotic pressure differences of up to 1.1 MPa between the water phases. At high PGPR concentrations (>2 wt%), emulsions showed good physical stability, with encapsulation efficiency close to 100%. It was found that PGPR is involved in water transfer between the water phases through reverse micelle formation by PGPR molecules or hydrated monomers of PGPR, and this allows for controlled swelling. Emulsions that are initially of low viscosity (milk-like emulsions), obtain an apparent viscosity of up to 3 Pa·s, and this effect can be used to tune the emulsion properties to the targeted application, whithout the need to gel either the internal or external phase.
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