Linked Life Data

21333279

Source:http://linkedlifedata.com/resource/pubmed/id/21333279

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2011-3-7
pubmed:abstractText
The processes of dehydration and rehydration of ?-cyclodextrin were studied by analysis of the (1)H NMR (nuclear magnetic resonance) line shape. Dehydration was carried in an open ampoule as a function of temperature and above 400 K total dehydration of ?-cyclodextrin was observed. This result was confirmed by the thermogravimetry (TG) measurements. Rehydration was studied as a function of time at room temperature. After 40 days, ?-cyclodextrin was found to absorb eight water molecules. The analysis of temperature changes in the shape of the (1)H NMR line of ?-cyclodextrin kept in a closed ampoule and its dielectric measurements provided information on the mobility of water molecules. The water molecules were found to perform complex molecular motions, that is, reorientational jumps below 200K and additionally, translational motion (diffusion) above 200K.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
1873-426X
pubmed:author
pubmed:copyrightInfo
Copyright © 2011 Elsevier Ltd. All rights reserved.
pubmed:issnType
Electronic
pubmed:day
1
pubmed:volume
346
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
659-63
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
1H NMR study of rehydration/dehydration and water mobility in ?-cyclodextrin.
pubmed:affiliation
Faculty of Physics, A. Mickiewicz University, ul. Umultowska 85, 61-614 Pozna?, Poland.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't