Abstract

The influence of sodium chloride salt (NaCl) concentrations on the physical stability of sunflower oil (SFO)-in-water emulsions (40 w/w% SFO) stabilized by 7 w/w% bambara groundnut flour (BGNF) was investigated. Oil droplet sizes and emulsion microstructure were measured microscopically. Physical stability was studied using an optical analyzer, Turbiscan MA 2000, by observing changes in backscattering flux (%) at 20°C. NaCl significantly affected (p < 0.05) emulsion stability of BGNF-stabilized emulsion. Increased NaCl in the emulsion increased droplet size and physical instability of BGNF-stabilized emulsions. The results indicated that the stability of BGNF-stabilized emulsion can be controlled and manipulated using NaCl. Emulsion destabilization involving oil droplet agglomeration is prevalent in all the studied SFO-in-water emulsions and emulsion microstructures were significantly affected by the presence of NaCl in gelatinized BGNF matrix.

Details

Title
Physical stability characteristics of sunflower oil-in-water emulsion containing sodium chloride, stabilized by gelatinized bambara groundnut flour
Author
Adeyi, Oladayo 1 ; Daniel IO Ikhu-Omoregbe 2 ; Jideani, Victoria Adaora 3 

 Department of Chemical Engineering, Landmark University, Omu-Aran, Nigeria 
 Department of Chemical Engineering, Cape Peninsula University of Technology, Cape Town, South Africa 
 Department of Food Technology, Cape Peninsula University of Technology, Cape Town, South Africa 
Publication year
2019
Publication date
Jan 2019
Publisher
Taylor & Francis Ltd.
e-ISSN
23311916
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2352086117
Copyright
© 2019 The Author(s). This open access article is distributed under a Creative Commons Attribution (CC-BY) 4.0 license. This work is licensed under the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.