2007
DOI: 10.1016/j.foodres.2007.03.001
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Intrinsic viscosity and viscoelastic properties of xanthan/guar mixtures in dilute solutions: Effect of salt concentration on the polymer interactions

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Cited by 125 publications
(65 citation statements)
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“…The first effect detected by the electrolyte is a reduction in the value of the apparent viscosity regarding the obtained viscosity value in absence of NaCl. This decrease with the addition of NaCl is due to the charge screening of electrostatic repulsions and then, a more compact conformation is possible, which produces a decrease in the hydrodynamic size of the molecule, producing a decrease in viscosity (Colinet, Dulon, Hamaide, Le Cerf, & Picton, 2009;Khouryieh, Herald, Aramouni, & Alavi, 2007).…”
Section: Resultsmentioning
confidence: 99%
“…The first effect detected by the electrolyte is a reduction in the value of the apparent viscosity regarding the obtained viscosity value in absence of NaCl. This decrease with the addition of NaCl is due to the charge screening of electrostatic repulsions and then, a more compact conformation is possible, which produces a decrease in the hydrodynamic size of the molecule, producing a decrease in viscosity (Colinet, Dulon, Hamaide, Le Cerf, & Picton, 2009;Khouryieh, Herald, Aramouni, & Alavi, 2007).…”
Section: Resultsmentioning
confidence: 99%
“…Furthermore, the longer the branching the higher is the intrinsic viscosity and vice versa 31 . The intrinsec viscosity of a polymer is dependent on its molecular weight and chain dimension 32,33 . In dilute solutions, the polymer chains are separate, so intrinsic viscosity of a polymer in solution depends only on the dimensions of the polymer chain and on the molecular weight 23,32 .…”
Section: Physico-chemical Propertiesmentioning
confidence: 99%
“…Globally, there is a renewed interest in investigating drugs and excipients from natural sources, especially from plant and marine sources that include starches obtained from corn, wheat, rice, and tapioca (Andreev 2004) and different types of essential and aromatic oils. A number of polysaccharides like chitosan (Park et al 2002;Sakkinen et al 2003;Thanou et al 2000), tamarind seed polysaccharide (Gholardi et al 2000;Kulkarni et al 2005;Sumath and Ray 2002;Miyazaki et al 1998), psyllium husk (Fischer et al 2004a), guar gum (George and Abraham 2007), xanthum gum (Attama et al 2006;Khourefieh et al 2007), and rice bran wax (Dolz et al 2007) are currently being used or investigated for varied roles as pharmaceutical excipients which include mucoadhesion, gel former, drug release retardant, plasticizer, thickener, and binder. The investigations to explore and investigate newer and newer plant sources continue unabated despite the availability of a large number of synthetic excipients.…”
Section: Polysaccharides As Pharmaceutical Excipientsmentioning
confidence: 99%