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Binding of hexadecyltrimethylammonium bromide to starch polysaccharides. Part II. Calorimetric study

Lundqvist, Henrik LU ; Eliasson, Ann-Charlotte LU and Olofsson, Gerd LU (2002) In Carbohydrate Polymers 49(2). p.109-120
Abstract
Isothermal titration calorimetry was used to study the interaction between hexadecyltrimethylammonium bromide, CTAB, and three starch polysaccharides, amylose from potato, amylopectin from potato and amylopectin from barley. The enthalpy change for consecutive additions of CTAB to starch polysaccharide solutions were measured at 27degreesC. The starch-CTAB interaction enthalpies, DeltaH(f), were calculated by subtracting the enthalpy of micelle dissociation and dilution from the observed heat and relating the interaction enthalpy to the amount of interacting CTAB. The interaction was studied at three polysaccharide concentrations, 0.1, 0.25 and 0.5% w/w. The exothermic interaction enthalpy was constant and quite large in the main part of... (More)
Isothermal titration calorimetry was used to study the interaction between hexadecyltrimethylammonium bromide, CTAB, and three starch polysaccharides, amylose from potato, amylopectin from potato and amylopectin from barley. The enthalpy change for consecutive additions of CTAB to starch polysaccharide solutions were measured at 27degreesC. The starch-CTAB interaction enthalpies, DeltaH(f), were calculated by subtracting the enthalpy of micelle dissociation and dilution from the observed heat and relating the interaction enthalpy to the amount of interacting CTAB. The interaction was studied at three polysaccharide concentrations, 0.1, 0.25 and 0.5% w/w. The exothermic interaction enthalpy was constant and quite large in the main part of the concentration range studied for all three-starch polysaccharides. Amylose had an interaction enthalpy of -55 kJ/mol CTAB while the amylopectin samples had an interaction enthalpy of -40 kJ/mol CTAB. Amylopectin and amylose seemed to have a similar interaction with CTAB, the small differences were probably due to the differences in structure between the polysaccharides. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
isothermal titration calorimetry and surfactant, amylose, amylopectin
in
Carbohydrate Polymers
volume
49
issue
2
pages
109 - 120
publisher
Elsevier
external identifiers
  • wos:000175744500002
  • scopus:0036680872
ISSN
0144-8617
DOI
10.1016/S0144-8617(01)00326-5
language
English
LU publication?
yes
id
5e18dae7-2eb1-4926-baa4-aae0f2d42a16 (old id 337263)
date added to LUP
2007-11-23 11:19:31
date last changed
2017-07-23 03:56:39
@article{5e18dae7-2eb1-4926-baa4-aae0f2d42a16,
  abstract     = {Isothermal titration calorimetry was used to study the interaction between hexadecyltrimethylammonium bromide, CTAB, and three starch polysaccharides, amylose from potato, amylopectin from potato and amylopectin from barley. The enthalpy change for consecutive additions of CTAB to starch polysaccharide solutions were measured at 27degreesC. The starch-CTAB interaction enthalpies, DeltaH(f), were calculated by subtracting the enthalpy of micelle dissociation and dilution from the observed heat and relating the interaction enthalpy to the amount of interacting CTAB. The interaction was studied at three polysaccharide concentrations, 0.1, 0.25 and 0.5% w/w. The exothermic interaction enthalpy was constant and quite large in the main part of the concentration range studied for all three-starch polysaccharides. Amylose had an interaction enthalpy of -55 kJ/mol CTAB while the amylopectin samples had an interaction enthalpy of -40 kJ/mol CTAB. Amylopectin and amylose seemed to have a similar interaction with CTAB, the small differences were probably due to the differences in structure between the polysaccharides.},
  author       = {Lundqvist, Henrik and Eliasson, Ann-Charlotte and Olofsson, Gerd},
  issn         = {0144-8617},
  keyword      = {isothermal titration calorimetry and surfactant,amylose,amylopectin},
  language     = {eng},
  number       = {2},
  pages        = {109--120},
  publisher    = {Elsevier},
  series       = {Carbohydrate Polymers},
  title        = {Binding of hexadecyltrimethylammonium bromide to starch polysaccharides. Part II. Calorimetric study},
  url          = {http://dx.doi.org/10.1016/S0144-8617(01)00326-5},
  volume       = {49},
  year         = {2002},
}