Visualizing the interaction between sodium caseinate and calcium alginate microgel particles

Ching, Su Hung, Bhandari, Bhesh, Webb, Richard and Bansal, Nidhi (2015) Visualizing the interaction between sodium caseinate and calcium alginate microgel particles. Food Hydrocolloids, 43 165-171. doi:10.1016/j.foodhyd.2014.05.013

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
UQ342654_OA.pdf Full text (open access) application/pdf 2.13MB 252

Author Ching, Su Hung
Bhandari, Bhesh
Webb, Richard
Bansal, Nidhi
Title Visualizing the interaction between sodium caseinate and calcium alginate microgel particles
Journal name Food Hydrocolloids   Check publisher's open access policy
ISSN 0268-005X
1873-7137
Publication date 2015-01
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.foodhyd.2014.05.013
Open Access Status File (Author Post-print)
Volume 43
Start page 165
End page 171
Total pages 7
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2015
Language eng
Abstract In this study, the pH dependent adsorption of sodium caseinate onto the surface of micron-sized calcium alginate microgel particles (20-80 μm) was evaluated by electrophoretic mobility measurements (ζ-potential), microscopy, protein assay and a protein dye binding method. ζ-potential measurements and protein assay results suggested that protein adsorption occurred due to electrostatic complexation between sodium caseinate and calcium alginate and was pH dependent. Results of protein dye binding method were in agreement with those of protein assay and ζ-potential measurements. Confocal laser scanning and fluorescence microscopy confirmed the presence of protein layer on the surface of alginate microgel particles at pH 3 and 4. Micrographs from transmission electron microscopy revealed a protein coating with a thickness of ∼206-240 nm on the gel particle surfaces.
Keyword Calcium alginate microgel
Protein polysaccharide complexation
Alginate caseinate interaction
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Agriculture and Food Sciences
Official 2015 Collection
Centre for Microscopy and Microanalysis Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 8 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 9 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 21 Oct 2014, 01:28:07 EST by System User on behalf of School of Agriculture and Food Sciences