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Novel freeze-dried foams from glutenin- and gliadin-rich fractions

Blomfeldt, Thomas; Kuktaite, Ramune; Plivelic, Tomás LU and Rasheed, Faiza (2012) In RSC Advances 2(16). p.6617-6627
Abstract
This is the first study on freeze-dried foams prepared from glutenin- and gliadin-rich fractions of wheat gluten and blends thereof. It was found that the foam density and stiffness could be controlled by a suitable choice of the glutenin/gliadin ratio. The glutenin-rich samples had the highest foam densities and the density decreased with increasing gliadin content. The compression modulus also decreased with increasing gliadin content, which was explained by the decrease in foam density, a more open porosity and the more aggregated/polymerized structure in the presence of glutenin. IR

and SE-HPLC revealed that the least aggregated foams were those consisting only of the gliadin-rich fraction. Confocal laser scanning microscopy... (More)
This is the first study on freeze-dried foams prepared from glutenin- and gliadin-rich fractions of wheat gluten and blends thereof. It was found that the foam density and stiffness could be controlled by a suitable choice of the glutenin/gliadin ratio. The glutenin-rich samples had the highest foam densities and the density decreased with increasing gliadin content. The compression modulus also decreased with increasing gliadin content, which was explained by the decrease in foam density, a more open porosity and the more aggregated/polymerized structure in the presence of glutenin. IR

and SE-HPLC revealed that the least aggregated foams were those consisting only of the gliadin-rich fraction. Confocal laser scanning microscopy revealed the presence of both HMW-glutenin and gliadin (to a certain extent probably resisting the ethanol extraction process) in the glutenin-rich foams. SAXS indicated that the gliadin-rich fraction contributed with weakly correlated protein aggregates with a characteristic distance of 40–43 Å. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
glutenin, foam structure, aggregates, mechanical properties, gliadin
in
RSC Advances
volume
2
issue
16
pages
6617 - 6627
publisher
Royal Society of Chemistry
external identifiers
  • wos:000306415100032
  • scopus:84864075476
ISSN
2046-2069
DOI
10.1039/c2ra20946b
language
English
LU publication?
yes
id
c0530ec4-c18c-415b-baa8-79f83d5f089d (old id 2917117)
date added to LUP
2012-08-06 11:47:19
date last changed
2017-10-22 04:13:32
@article{c0530ec4-c18c-415b-baa8-79f83d5f089d,
  abstract     = {This is the first study on freeze-dried foams prepared from glutenin- and gliadin-rich fractions of wheat gluten and blends thereof. It was found that the foam density and stiffness could be controlled by a suitable choice of the glutenin/gliadin ratio. The glutenin-rich samples had the highest foam densities and the density decreased with increasing gliadin content. The compression modulus also decreased with increasing gliadin content, which was explained by the decrease in foam density, a more open porosity and the more aggregated/polymerized structure in the presence of glutenin. IR<br/><br>
and SE-HPLC revealed that the least aggregated foams were those consisting only of the gliadin-rich fraction. Confocal laser scanning microscopy revealed the presence of both HMW-glutenin and gliadin (to a certain extent probably resisting the ethanol extraction process) in the glutenin-rich foams. SAXS indicated that the gliadin-rich fraction contributed with weakly correlated protein aggregates with a characteristic distance of 40–43 Å.},
  author       = {Blomfeldt, Thomas and Kuktaite, Ramune and Plivelic, Tomás and Rasheed, Faiza},
  issn         = {2046-2069},
  keyword      = {glutenin,foam structure,aggregates,mechanical properties,gliadin},
  language     = {eng},
  number       = {16},
  pages        = {6617--6627},
  publisher    = {Royal Society of Chemistry},
  series       = {RSC Advances},
  title        = {Novel freeze-dried foams from glutenin- and gliadin-rich fractions},
  url          = {http://dx.doi.org/10.1039/c2ra20946b},
  volume       = {2},
  year         = {2012},
}