Geopolymers
Inorganic polymeric new materials
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Alberto Albis
Alberto Albis
Departamento de Química, Universidad Nacional de Colombia, Cra 45 26–85 Oficina 409, Bogotá, Colombia
Departamento de Ingeniería Química, Universidad del Atlántico, Barranquilla, Colombia
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Departamento de Ingeniería Química, Universidad del Atlántico, Barranquilla, Colombia
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José Manuel Lozano
José Manuel Lozano
Departamento de Farmacia, Universidad Nacional de Colombia, Bogotá, Colombia
Fundación Instituto de Inmunología de Colombia FIDIC, Bogotá, Colombia
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Fundación Instituto de Inmunología de Colombia FIDIC, Bogotá, Colombia
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Javier Sancho
Javier Sancho
Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias Universidad de Zaragoza, Zaragoza, Spain
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Carmen M. Romero
Carmen M. Romero
Departamento de Química, Universidad Nacional de Colombia, Cra 45 26–85 Oficina 409, Bogotá, Colombia
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Abstract
Thermal stability of bovine α-lactalbumin in the presence of three different calcium concentrations in aqueous solutions of several concentrations of erythritol, xylitol, sorbitol, and inositol at pH 6.5 was evaluated by UV absorbance, fluorescence spectroscopy, and circular dichroism spectroscopy. At the selected conditions, the thermal denaturation process is reversible and is well described by a two-state model. Results show a higher stability for the holo form of the protein in the presence of calcium, followed by the holo- and the apo-lactalbumin, respectively. The stabilizing effect of the polyols increases with polyol concentration and it is higher for the apo-lactalbumin than holo-lactalbumin and is very small for the protein in the presence of a calcium excess.
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| Journal of Thermal Analysis and Calorimetry | |
|---|---|
| Language | English |
| Size | A4 |
| Year of Foundation |
1969 |
| Volumes per Year |
1 |
| Issues per Year |
24 |
| Founder | Akadémiai Kiadó |
| Founder's Address |
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. |
| Publisher | Akadémiai Kiadó Springer Nature Switzerland AG |
| Publisher's Address |
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11. |
| Responsible Publisher |
Chief Executive Officer, Akadémiai Kiadó |
| ISSN | 1388-6150 (Print) |
| ISSN | 1588-2926 (Online) |
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Temperature dependence of the rate of reaction in thermal analysis
The Arrhenius equation in condensed phase kinetics
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