Abstract
Proton nuclear magnetic relaxation (NMR) (measured using hard pulses) was applied to the primary stages of wheat seed imbibition investigations. The total proton NMR signal as a function of H 2O or D 2O mass uptake was recorded. The components coming from the solid matrix of the seed ( S) and from the water absorbed were identified. The proton signal of the solid is not much affected by seed hydration, but its magnitude decreases as the starchy endosperm of the wheat seed is decomposed. The decrease is linear as a function of the water mass absorbed, causing the non-linear increase of the total liquid proton signal ( L). Models describing L S as a function of H 2O mass absorbed and S (L + S) as a function of D 2O absorbed were proposed.
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