A new interpretation of proton NMR relaxation time measurements of water in food

Hills, B.P.; Takacs, S.F.; Belton, P.S.

A new interpretation of proton NMR relaxation time measurements of water in food

1990

Hills, B.P. | Takacs, S.F. | Belton, P.S.

The transverse water proton relaxation in three widely differing types of sample, native lysozyme solutions, skimmed milk and apple, has been analysed. The relaxation times show characteristic variations with CPMG pulse spacing and morphology which can be interpreted in terms of chemical exchange and molecular diffusion without recourse to popular concepts such as various amounts and types of 'bound' water. Our suggest that transverse water proton relaxation might be used as a sensitive probe of changes in water distribution during cellular growth and differentiation, freeze-thawing and dehydration-rehydration in food systems.

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