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Phase segregation of amylopectin and beta-lactoglobulin in aqueous system

Quiroga, Carla LU and Bergenståhl, Björn LU (2008) In Carbohydrate Polymers 72(1). p.151-159
Abstract
Phase behavior of aqueous amylopectin and beta-lactoglobulin system was studied using Fourier transform infrared spectroscopy. Polysaccharide-protein mixtures were prepared at different concentrations and left for equilibration; afterwards their spectra were recorded and correlated using Partial Least Square analysis. Tertiary phase diagrams were built for the system at different equilibration times (2 and 6 weeks); the binodals were asymmetric and displayed toward the protein concentration. In the two-phase region of the phase diagrams the mixtures showed an upper layer rich in beta-lactoglobulin and a lower layer rich in retrograded amylopectin, and in some cases an intermediate layer was seen which was a metastable phase.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
amylopectin, beta-lactoglobulin, transform infrared spectroscopy, Fourier, polymer incompatibility, phase segregation, phase diagram
in
Carbohydrate Polymers
volume
72
issue
1
pages
151 - 159
publisher
Elsevier
external identifiers
  • wos:000253303900018
  • scopus:37849045896
ISSN
0144-8617
DOI
10.1016/j.carbpol.2007.07.041
language
English
LU publication?
yes
id
667ba288-fdf7-4ce9-9691-5406f82d8ce6 (old id 1196955)
date added to LUP
2008-09-10 12:49:02
date last changed
2017-01-01 04:29:31
@article{667ba288-fdf7-4ce9-9691-5406f82d8ce6,
  abstract     = {Phase behavior of aqueous amylopectin and beta-lactoglobulin system was studied using Fourier transform infrared spectroscopy. Polysaccharide-protein mixtures were prepared at different concentrations and left for equilibration; afterwards their spectra were recorded and correlated using Partial Least Square analysis. Tertiary phase diagrams were built for the system at different equilibration times (2 and 6 weeks); the binodals were asymmetric and displayed toward the protein concentration. In the two-phase region of the phase diagrams the mixtures showed an upper layer rich in beta-lactoglobulin and a lower layer rich in retrograded amylopectin, and in some cases an intermediate layer was seen which was a metastable phase.},
  author       = {Quiroga, Carla and Bergenståhl, Björn},
  issn         = {0144-8617},
  keyword      = {amylopectin,beta-lactoglobulin,transform infrared spectroscopy,Fourier,polymer incompatibility,phase segregation,phase diagram},
  language     = {eng},
  number       = {1},
  pages        = {151--159},
  publisher    = {Elsevier},
  series       = {Carbohydrate Polymers},
  title        = {Phase segregation of amylopectin and beta-lactoglobulin in aqueous system},
  url          = {http://dx.doi.org/10.1016/j.carbpol.2007.07.041},
  volume       = {72},
  year         = {2008},
}