The overall objective of the present work is to elucidate the possibilities to monitor and quantify transport phenomena and to characterise the structure of heterogeneous disperse media, which are non-matched and thus inaccessible to many optical techniques by means of Nuclear Magnetic Resonance (NMR). NMR offers the possibility to perform measurements non-invasively and non-destructively in order to study the structure or to trace structural changes or transport processes inside the sample without preparations or unpredictable modifications caused by the measurement. Thus it is not only possible to detect and quantify the static structure, but also to monitor dynamic structural changes and processes during production, storage, transportation and even consumption of food-products with temporal, spatial and chemical resolution (multi-dimensional). NMR enables, therefore, repetitive testing of dynamic processes including enzymic and non-enzymic chemical reactions. Samples may be studied several times under identical or changed conditions, which is a great advantage compared to other imaging preparative methods like optical or electron microscopy-methods. The following topics have proved to be promising applications of NMR in food technology and process engineering: (a) structure and structural changes of disperse media, (b) convective transport processes, (c) diffusive transport processes and (d) spectroscopic material characterisation.
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The overall objective of the present work is to elucidate the possibilities to monitor and quantify transport phenomena and to characterise the structure of heterogeneous disperse media, which are non-matched and thus inaccessible to many optical techniques by means of Nuclear Magnetic Resonance (NMR). NMR offers the possibility to perform measurements non-invasively and non-destructively in order to study the structure or to trace structural changes or transport processes inside the sample with...
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