PFG NMR and internal magnetic field gradients in plant-based materials.
In this contribution, it is demonstrated that inner magnetic field gradients can seriously affect the results of stimulated echo PFG NMR experiments on plant-based materials even if there is no notable content of paramagnetic substances. Such effects could be observed both in experiments on water in pharmaceutical grade cellulose powder materials and on eggplant fruit tissue. In both cases, it was observed that the effects of internal magnetic field gradients led to different relative values of the diffusion coefficient compared to values obtained with a gradient-compensating pulse sequence.
Nestle
Nikolaus
N
Universität Leipzig, Abteilung Grenzflächenphysik, Linnéstrasse 5, D-04103 Leipzig, Germany. nikolaus.nestle@ch.tum.de
Qadan
Asal
A
Galvosas
Petrik
P
Süss
Wolfgang
W
Kärger
Jörg
J
D002482:Cellulose; D004058:Diffusion; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D032323:Solanum melongena; D014867:Water
D014867:Water; D002482:Cellulose