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Hydration of sodium hyaluronate, NMR study of an oriented sample.

Abstract：

:A sample of highly oriented Na-hyaluronate was prepared with a wet--spinning method and equilibrated to 75% relative humidity. Its proton NMR spectrum was recorded as a function of the angle theta between the hyaluronate helix axis and the external magnetic field. It appeared as a singlet with an angle-dependent line width expressed by delta v o + A(1-3cos2 theta)2. This reveals a residual intramolecular dipolar interaction of anisotropically rotating water molecules. The merging of the expected doublet into a single line is assumed to be caused by proton exchange between water molecules. The result indicates a hydration similar to that of many other fibrous biopolymers at comparable relative humidities.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Lahajnar G,Rupprecht A

doi

10.1016/s0006-291x(86)80336-9

subject

Has Abstract

pub_date

1986-11-26 00:00:00

pages

73-7

issue

1

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(86)80336-9

journal_volume

141

pub_type

杂志文章

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