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Eur Biophys J. 2000;29(3):159-64.

1H NMR studies: dynamics of water in gelatin.

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Structures Tissulaires et Interactions Moléculaires, INRA, St-Genès-Champanelle, France.


Proton magnetic resonance was used to characterize the dynamics of water in gelatin. Both sol and gel states were investigated. Transverse relaxation rates (R2) were dependent on the proton frequency measurement. (R2) measured with the Carr-Purcell-Meiboom-Gill pulse sequence was dependent on pulse spacing. These observations were interpreted in terms of chemical exchanges between water protons and those of the macromolecules in the sol state, whereas in the gel state the contribution of diffusion through microheterogeneities in the sample seems to provide an additional transverse relaxation mechanism.

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