Search results for "Transfert de matière"
showing 2 items of 2 documents
Study of mechanical properties and mass transfer of agglomerated cork stoppers for sparkling wine conservation.
2019
The agglomerated cork stopper plays a key role in the preservation of sparkling wines because the gas exchanges (CO2 and O2) between the wine and the external environment depend on the stopper. The objective of this work is to determine the mechanical and barrier properties of agglomerated cork stoppers in order to identify the formulation parameters that can impact these properties, and highlight several critical points, which must be controlled during the process.The characterization of the agglomerated cork structure has revealed a large intergranular porosity, which is greatly reduced when smaller cork granules are used and when the cork is compressed in the bottleneck.The study of the …
Contribution à la compréhension de l'influence des paramètres de formulation et de procédé sur la structure et les propriétés fonctionnelle de films …
2012
The aim of this study is the analysis of structure and transfer mechanisms through chitosan based food packaging materials with incorporated carvacrol as a model of antimicrobial active substance. Integration of composition parameters, structure, processing and drying of chitosan systems is correlated to its physico chemical and functional properties. Understanding and detailed analyses of processing parameters is crucial in production of active chitosan coatings applied on conventional materials such as polyethylene. So, the knowledge of composition and microstructure in association to environmental conditions, control the retention and the release kinetics of carvacrol from chitosan film.…