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The effects of salts on the nmr spectra of D2O in collagen fibers

✍ Scribed by R. E. Dehl

Publisher
Wiley (John Wiley & Sons)
Year
1973
Tongue
English
Weight
404 KB
Volume
12
Category
Article
ISSN
0006-3525

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✦ Synopsis

The effects of two salts, MgClz and MgS04, on the wide-line nmr spectrum of DzO in oriented, undenatured collagen fibers have been examined a t four different D20 contents. MgClz was found to decrease the nmr doublet splitting, as compared with equal quantities of pure D20, while the major effect of MgSOa was to inhibit the adsorption of D20 without significantly affecting its nmr spectrum. The results, together with a few observations of KCI and LiCl solutions, indicate that even fairly high concentrations of salt have only small effects on the nmr spectrum of D20 in fibrous collagen. It is considered unlikely that either "two-state" or "structured-water" models can satisfactorily account for the D20-nmr doublet spectrum or the effects of salts on it, over the entire range of observed D20 content.

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