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Processes 2016, 4(2), 17; doi:10.3390/pr4020017

Extending Emulsion Functionality: Post-Homogenization Modification of Droplet Properties

1
College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
2
Biopolymers and Colloids Laboratory, Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA
3
Department of Biochemistry, Faculty of Science, King Abdulaziz University, P. O. Box 80203, Jeddah 21589, Saudi Arabia
*
Author to whom correspondence should be addressed.
Academic Editor: Andreas Håkansson
Received: 22 March 2016 / Revised: 28 April 2016 / Accepted: 9 May 2016 / Published: 17 May 2016
(This article belongs to the Special Issue Emulsification Processes)
View Full-Text   |   Download PDF [2151 KB, uploaded 17 May 2016]   |  

Abstract

Homogenizers are commonly used to produce oil-in-water emulsions that consist of emulsifier-coated oil droplets suspended within an aqueous phase. The functional attributes of emulsions are usually controlled by selecting appropriate ingredients (e.g., surfactants, co-surfactants, oils, solvents, and co-solvents) and processing conditions (e.g., homogenizer type and operating conditions). However, the functional attributes of emulsions can also be tailored after homogenization by manipulating their composition, structure, or physical state. The interfacial properties of lipid droplets can be altered using competitive adsorption or coating methods (such as electrostatic deposition). The physical state of oil droplets can be altered by selecting an oil phase that crystallizes after the emulsion has been formed. The composition of the disperse phase can be altered by mixing different kinds of oil droplets together to induce inter-droplet exchange of oil molecules. The local environment of oil droplets can be altered by embedding them within hydrogel beads. The aggregation state of oil droplets can be controlled by promoting flocculation. These post-homogenization methods can be used to alter functional attributes such as physical stability, rheology, optical properties, chemical degradation, retention/release properties, and/or gastrointestinal fate. View Full-Text
Keywords: homogenization; post-homogenization; electrostatic deposition; emulsions; nanoemulsions; hydrogels; solid lipid nanoparticles homogenization; post-homogenization; electrostatic deposition; emulsions; nanoemulsions; hydrogels; solid lipid nanoparticles
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Bai, L.; McClements, D.J. Extending Emulsion Functionality: Post-Homogenization Modification of Droplet Properties. Processes 2016, 4, 17.

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