Dresden 2014 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 57: Physics of Food
CPP 57.2: Vortrag
Freitag, 4. April 2014, 11:15–11:30, ZEU 260
Molecular migration in multicomponent food products — •Svenja Reinke1, Stephan V. Roth2, Gonzalo Santoro2, John Rasburn3, Stefan Palzer4, and Stefan Heinrich1 — 1Hamburg University of Technology, Hamburg, Germany — 2HASYLAB/DESY, Hamburg, Germany — 3Nestlé PTC, York, United Kingdom — 4Nestlé SA, Vevey, Switzerland
Controlling the molecular migration of molecules through complex food products is of high interest in food technology: This process is leading to major quality issues such as fat blooming of chocolate resulting in large sales losses for the food industry.
In general, the complex, multicomponent food products investigated consist of particles surrounded by a continuous lipid matrix. The molecules could migrate through the continuous matrix phase, through the phase composed by the embedded particles or via the interface of matrix and particles. However, this mechanism of migration through multicomponent materials is still not well understood. Therefore, the microstructure of the multicomponent material is analyzed and visualization of the migration path within the matrix is intended. Using microbeam small-angle X-ray scattering (μSAXS) at the MiNaXS/P03 beamline at DESY we investigated oil migration through multicomponent products. Thereby, the effect of different oils and their possible influence on structural changes was analyzed. To get further insight into possible pathways, the wetting properties of the hydrophobic and hydrophilic components are analyzed. We present a model to describe the migration on a molecular level based on molecular simulations.