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Dielectric investigation of the hydration mechanism in potato starch

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dc.contributor.author Vartzeli-Nikaki, P en
dc.contributor.author Kripotou, S en
dc.contributor.author Konsta, AA en
dc.date.accessioned 2014-03-01T02:42:05Z
dc.date.available 2014-03-01T02:42:05Z
dc.date.issued 2002 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/30778
dc.subject Experimental Data en
dc.subject Potato en
dc.subject Sorption Isotherm en
dc.subject Water Content en
dc.subject.other Adsorption isotherms en
dc.subject.other Dielectric properties en
dc.subject.other Hydration en
dc.subject.other Numerical methods en
dc.subject.other Plants (botany) en
dc.subject.other Relaxation processes en
dc.subject.other Spectroscopic analysis en
dc.subject.other Water en
dc.subject.other Equilibrium water sorption isotherm en
dc.subject.other Physicochemical technique en
dc.subject.other Potato starch en
dc.subject.other Thermally Stimulated Depolarization Current en
dc.subject.other Water sorption measurement en
dc.subject.other Starch en
dc.title Dielectric investigation of the hydration mechanism in potato starch en
heal.type conferenceItem en
heal.identifier.primary 10.1109/ISE.2002.1043012 en
heal.identifier.secondary http://dx.doi.org/10.1109/ISE.2002.1043012 en
heal.publicationDate 2002 en
heal.abstract The hydration mechanism of various polysaccharides of plant origin has been investigated by means of several physicochemical and dielectric techniques. In this work, we present, more particularly, results obtained with potato starch samples, using (a) equilibrium water sorption isotherms and (b) Thermally Stimulated Depolarization Currents (TSDC) techniques in the temperature range 77 - 300 K. The water content of our samples, defined as the ratio of weight of sorbed water to the weight of dry sample, varied between 2.4% and 41%. The results of equilibrium water sorption measurements were analyzed by fitting experimental data to the Guggenheim-Anderson-De Boer (GAB) equation. Two main relaxation regions are observed in TSDC spectra; the dependence of their characteristics on the water content is investigated and their origin is interpreted on the basis of results obtained in the first part of this work. en
heal.journalName Proceedings - International Symposium on Electrets en
dc.identifier.doi 10.1109/ISE.2002.1043012 en
dc.identifier.spage 338 en
dc.identifier.epage 341 en


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