A study of casein hydration by the thermally stimulated depolarisation currents method

Anagnostopoulou-Konsta, A; Pissis, P

dc.contributor.author	Anagnostopoulou-Konsta, A	en
dc.contributor.author	Pissis, P	en
dc.date.accessioned	2014-03-01T01:06:44Z
dc.date.available	2014-03-01T01:06:44Z
dc.date.issued	1987	en
dc.identifier.issn	0022-3727	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9595
dc.subject.classification	Physics, Applied	en
dc.subject.other	MOLECULES	en
dc.subject.other	WATER - Dielectric Properties	en
dc.subject.other	CASEIN HYDRATION	en
dc.subject.other	DEPOLARIZATION CURRENTS	en
dc.subject.other	BIOCHEMISTRY	en
dc.title	A study of casein hydration by the thermally stimulated depolarisation currents method	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/0022-3727/20/9/013	en
heal.identifier.secondary	http://dx.doi.org/10.1088/0022-3727/20/9/013	en
heal.identifier.secondary	013	en
heal.language	English	en
heal.publicationDate	1987	en
heal.abstract	The dielectric behaviour of bound water in compressed casein pellets has been studied using the thermally stimulated depolarisation currents method over the temperature range from 77 to 300 K and the hydration range from 1 to 24% w/w. Two distinct relaxation regions are obtained: one in the range of T from 100 to 170 K attributed to the reorientation of loosely bound water molecules, and a second one in the range 190-290 K interpreted mainly in terms of water-assisted relaxation of the protein polar groups. The fact that both relaxations are very markedly influenced by the presence of water for hydration contents, h, higher than 9%, strongly suggests that all water molecules sorbed up to this value are irrotationally bound to the protein macromolecules. Comparison with results obtained by other investigators by a variety of methods, as well as calculation of the primary sorption sites at the molecular level, give further support to the above interpretation.	en
heal.publisher	IOP PUBLISHING LTD	en
heal.journalName	Journal of Physics D: Applied Physics	en
dc.identifier.doi	10.1088/0022-3727/20/9/013	en
dc.identifier.isi	ISI:A1987K065200013	en
dc.identifier.volume	20	en
dc.identifier.issue	9	en
dc.identifier.spage	1168	en
dc.identifier.epage	1174	en