The dielectric relaxation of water in plant tissue

Pissis, P

dc.contributor.author	Pissis, P	en
dc.date.accessioned	2014-03-01T01:08:10Z
dc.date.available	2014-03-01T01:08:10Z
dc.date.issued	1990	en
dc.identifier.issn	0022-0957	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10312
dc.subject	Dielectric relaxation	en
dc.subject	Distribution of relaxation times	en
dc.subject	Free and bound water	en
dc.subject.classification	Plant Sciences	en
dc.title	The dielectric relaxation of water in plant tissue	en
heal.type	journalArticle	en
heal.identifier.primary	10.1093/jxb/41.6.677	en
heal.identifier.secondary	http://dx.doi.org/10.1093/jxb/41.6.677	en
heal.language	English	en
heal.publicationDate	1990	en
heal.abstract	Thermally stimulated depolarization current (TSDC) measurements on plant leaves and stems of six different species in the temperature range of 77-300 K revealed the existence of three different dispersions. The first dispersion at low temperatures, which is attributed to the relaxation of loosely bound water molecules was studied in detail in an attempt to obtain information on the possible structures of water in plant tissue. Its characteristics differ for various plant tissues, indicating a different organization of water in those plant tissues. The dispersion can be described by a continuous distribution of relaxation times t with both the activation energy W and the pre-exponential factor To in the Arrhenius equation being distributed parameters. The spectrum of W and To was determined for E. globulus and O. europaea leaf samples. The mean values of T and W are larger and that of To smaller than the corresponding values for free (bulk) water. The results favour a model of the organization of water in clusters rather than in multilayers and indicate a stronger binding of water in living systems. © 1990 Oxford University Press.	en
heal.publisher	OXFORD UNIV PRESS UNITED KINGDOM	en
heal.journalName	Journal of Experimental Botany	en
dc.identifier.doi	10.1093/jxb/41.6.677	en
dc.identifier.isi	ISI:A1990DL86100006	en
dc.identifier.volume	41	en
dc.identifier.issue	6	en
dc.identifier.spage	677	en
dc.identifier.epage	684	en