Advanced

Effect of the dispersed state of phospholipids on emulsification—Part 1. Phosphatidylcholine

Magnusson, Emma LU ; Nilsson, Lars LU and Bergenståhl, Björn LU (2016) In Colloids and Surfaces A: Physicochemical and Engineering Aspects 506. p.794-803
Abstract

In this study the effect of the dispersed state of soy phosphatidylcholine on emulsification is investigated. The emulsifier is either dispersed in the aqueous phase (coarsely, as small vesicles, as large vesicles), or it is dispersed in the oil phase. Oil-in-water emulsions are prepared with the emulsifier present in the different dispersed states. High-pressure homogenization is used for the emulsification and the impact of pressure, number of passes through the homogenizer and emulsifier concentration is investigated by determination of droplet size and surface loads. Pre-emulsions made using a rotor-stator mixer have a smaller average droplet diameter when the emulsifier is dispersed in the oil phase than in the aqueous phase... (More)

In this study the effect of the dispersed state of soy phosphatidylcholine on emulsification is investigated. The emulsifier is either dispersed in the aqueous phase (coarsely, as small vesicles, as large vesicles), or it is dispersed in the oil phase. Oil-in-water emulsions are prepared with the emulsifier present in the different dispersed states. High-pressure homogenization is used for the emulsification and the impact of pressure, number of passes through the homogenizer and emulsifier concentration is investigated by determination of droplet size and surface loads. Pre-emulsions made using a rotor-stator mixer have a smaller average droplet diameter when the emulsifier is dispersed in the oil phase than in the aqueous phase whereas the smallest droplets are obtained with small vesicles when high-pressure homogenization and repeated passages is used. Moreover, the droplet size can be significantly decreased by increasing the number of passages while an increased pressure has a smaller effect on droplet size. Hence, for a slow adsorbing emulsifier, repeated passages through the homogenizer may be more efficient since successive adsorption can occur. The surface loads, adsorption yields and emulsification efficiencies are observed to depend on the emulsification conditions and dispersed state of the emulsifier. The results from this study illustrates that the dispersion of the emulsifier may have a significant impact on emulsification and, hence, it may be important to consider the dispersed state of the emulsifier in order to achieve desired emulsion properties.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Adsorption, Asymmetric flow field-flow fractionation, Emulsification, Emulsion, High-pressure homogenization, Phospholipid
in
Colloids and Surfaces A: Physicochemical and Engineering Aspects
volume
506
pages
10 pages
publisher
Elsevier
external identifiers
  • scopus:84979671158
  • wos:000382591100094
ISSN
0927-7757
DOI
10.1016/j.colsurfa.2016.07.055
language
English
LU publication?
yes
id
d3f2ec5f-bbe1-4e4b-a173-dcbc75325b9f
date added to LUP
2016-10-14 11:23:26
date last changed
2017-09-24 05:01:55
@article{d3f2ec5f-bbe1-4e4b-a173-dcbc75325b9f,
  abstract     = {<p>In this study the effect of the dispersed state of soy phosphatidylcholine on emulsification is investigated. The emulsifier is either dispersed in the aqueous phase (coarsely, as small vesicles, as large vesicles), or it is dispersed in the oil phase. Oil-in-water emulsions are prepared with the emulsifier present in the different dispersed states. High-pressure homogenization is used for the emulsification and the impact of pressure, number of passes through the homogenizer and emulsifier concentration is investigated by determination of droplet size and surface loads. Pre-emulsions made using a rotor-stator mixer have a smaller average droplet diameter when the emulsifier is dispersed in the oil phase than in the aqueous phase whereas the smallest droplets are obtained with small vesicles when high-pressure homogenization and repeated passages is used. Moreover, the droplet size can be significantly decreased by increasing the number of passages while an increased pressure has a smaller effect on droplet size. Hence, for a slow adsorbing emulsifier, repeated passages through the homogenizer may be more efficient since successive adsorption can occur. The surface loads, adsorption yields and emulsification efficiencies are observed to depend on the emulsification conditions and dispersed state of the emulsifier. The results from this study illustrates that the dispersion of the emulsifier may have a significant impact on emulsification and, hence, it may be important to consider the dispersed state of the emulsifier in order to achieve desired emulsion properties.</p>},
  author       = {Magnusson, Emma and Nilsson, Lars and Bergenståhl, Björn},
  issn         = {0927-7757},
  keyword      = {Adsorption,Asymmetric flow field-flow fractionation,Emulsification,Emulsion,High-pressure homogenization,Phospholipid},
  language     = {eng},
  month        = {10},
  pages        = {794--803},
  publisher    = {Elsevier},
  series       = {Colloids and Surfaces A: Physicochemical and Engineering Aspects},
  title        = {Effect of the dispersed state of phospholipids on emulsification—Part 1. Phosphatidylcholine},
  url          = {http://dx.doi.org/10.1016/j.colsurfa.2016.07.055},
  volume       = {506},
  year         = {2016},
}