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Emulsification and adsorption properties of hydrophobically modified potato and barley starch

Nilsson, Lars LU and Bergenståhl, Björn LU (2007) In Journal of Agricultural and Food Chemistry 55(4). p.1469-1474
Abstract
In this paper, we studied the adsorption at emulsion droplets of potato starch, which was hydrophobically modified with octenyl succinate anhydride (OSA), a surface active macromolecule containing ultrahigh molar mass components. The results show that the substance works as an efficient emulsifier and that it can in some cases generate high surface loads (10 mg/m(2)). The results can be explained as an interplay between kinetic factors during the formation of the emulsion and the physical-chemical properties of the hydrophobically modified starch, such as the degree of substitution, molar mass, and radius. In turbulent flow fields, such as in a high-pressure homogenizer, the mass transport to the interface favors the adsorption of larger... (More)
In this paper, we studied the adsorption at emulsion droplets of potato starch, which was hydrophobically modified with octenyl succinate anhydride (OSA), a surface active macromolecule containing ultrahigh molar mass components. The results show that the substance works as an efficient emulsifier and that it can in some cases generate high surface loads (10 mg/m(2)). The results can be explained as an interplay between kinetic factors during the formation of the emulsion and the physical-chemical properties of the hydrophobically modified starch, such as the degree of substitution, molar mass, and radius. In turbulent flow fields, such as in a high-pressure homogenizer, the mass transport to the interface favors the adsorption of larger molecules as they are transported more rapidly to the interface. The larger molecules are also likely to have a higher substituent density and adsorption energy than smaller ones. This in turn is likely to give high surface loads and strengthen the effect of kinetic adsorption factors, as the large molecules will be overrepresented at the surface. (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Emulsions, Adsorption, OSA starch
in
Journal of Agricultural and Food Chemistry
volume
55
issue
4
pages
1469 - 1474
publisher
The American Chemical Society
external identifiers
  • wos:000244206700057
  • scopus:34249858659
ISSN
0021-8561
DOI
10.1021/jf062087z
project
CAP
language
English
LU publication?
no
id
a6949976-4230-4fdb-8195-d3379b109817 (old id 584732)
date added to LUP
2007-12-14 08:56:04
date last changed
2017-07-23 03:52:04
@article{a6949976-4230-4fdb-8195-d3379b109817,
  abstract     = {In this paper, we studied the adsorption at emulsion droplets of potato starch, which was hydrophobically modified with octenyl succinate anhydride (OSA), a surface active macromolecule containing ultrahigh molar mass components. The results show that the substance works as an efficient emulsifier and that it can in some cases generate high surface loads (10 mg/m(2)). The results can be explained as an interplay between kinetic factors during the formation of the emulsion and the physical-chemical properties of the hydrophobically modified starch, such as the degree of substitution, molar mass, and radius. In turbulent flow fields, such as in a high-pressure homogenizer, the mass transport to the interface favors the adsorption of larger molecules as they are transported more rapidly to the interface. The larger molecules are also likely to have a higher substituent density and adsorption energy than smaller ones. This in turn is likely to give high surface loads and strengthen the effect of kinetic adsorption factors, as the large molecules will be overrepresented at the surface.},
  author       = {Nilsson, Lars and Bergenståhl, Björn},
  issn         = {0021-8561},
  keyword      = {Emulsions,Adsorption,OSA starch},
  language     = {eng},
  number       = {4},
  pages        = {1469--1474},
  publisher    = {The American Chemical Society},
  series       = {Journal of Agricultural and Food Chemistry},
  title        = {Emulsification and adsorption properties of hydrophobically modified potato and barley starch},
  url          = {http://dx.doi.org/10.1021/jf062087z},
  volume       = {55},
  year         = {2007},
}