Dielectric studies of proton transport in hydrated proteins

 
see the original item page
in the repository's web site and access all digital files if the item*
share




1991 (EN)
Dielectric studies of proton transport in hydrated proteins (EN)

Pissis, P (EN)
Anagnostopoulou-Konsta, A (EN)

N/A (EN)

Proton transport in hydrated lysozyme powders is studied by means of the thermally stimulated depolarisation current (TSDC) method in the temperature range 77-300 K and the water content range 0.070-0.610 w/w. The results imply the existence of two separate proton transport processes. The corresponding dispersions were studied in detail by means of thermal sampling and partial heating techniques. They were found to be multiple with both activation energy W and pre-exponential factor tau-0 being distributed parameters. The spectra of W and tau-0 were determined at several water contents. Both dispersions become faster with increasing water content. The temperature and water content of their saturation can be related to critical water contents and possible structural changes of the protein and the hydration layers. (EN)

journalArticle

Hydrated Proteins (EN)
Protons (EN)
Thermally Stimulated Depolarization Current (TSDC) (EN)
Lysozyme Powders (EN)
Proteins--Dielectric Properties (EN)
Thermodynamics--Calculations (EN)
Isothermal Dielectric Measurements (EN)

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

Solid State Ionics (EN)

English

1991


ELSEVIER SCIENCE BV (EN)



*Institutions are responsible for keeping their URLs functional (digital file, item page in repository site)