Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 64: Issue 1
Comparison of Differently Bound Molecules in the Gel and Subgel Phases of a Phospholipid Bilayer System
Authors:
M. Kodama Okayama University of Science Department of Biochemistry 1-1 Ridai-cho Okayama 700-0005 Japan

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H. Kato Okayama University of Science Department of Biochemistry 1-1 Ridai-cho Okayama 700-0005 Japan

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H. Aoki Okayama University of Science Department of Biochemistry 1-1 Ridai-cho Okayama 700-0005 Japan

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Pages:
219–230
Online Publication Date:
02 Nov 2004
Publication Date:
01 Apr 2001
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1011501516365
Keywords:
DSC curve analysis; DPPC–water system; interlamellar water; subgel phase
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Abstract  

The thermal behavior associated with the melting of ice was investigated by differential scanning calorimetry (DSC) for the gel and L-subgel phases of dipalmitoylphosphatidylcholine (DPPC)-water system of varying water contents up to a full hydration. By calorimetric analysis previously developed by us, the numbers of differently bound water molecules were estimated, and used to construct water distribution diagrams (i.e., a plot of the cumulative numbers of these water molecules vs. water content) for the two phases. A comparison of the diagrams revealed the critical role of interlamellar water which changes from freezable to non-freezable one in a conversion of the gel to the L-subgel phase by the thermal annealing.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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