Method for processing raw materials having a cell structure...

A - Human Necessities – 22 – C

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A22C 9/00 (2006.01)

Patent

CA 2620122

The invention relates to a method for processing raw materials having a cell structure in the meat, meat by-products, fish and seafood processing industry for the purpose of optimizing and/or reducing the processing steps. According to the invention, an electric field with a field strength of > 0,5 kV/cm is applied and an energy input into the cell structure product to be processed with an energy upper limit is produced, said energy input excluding thermal effects as a primary cause of occurring product modifications. Electroporation of the cell membrane occurs, the semi-permeability of the cell membrane and thus the barrier of transport of substances between the cell interior and the exterior is reversibly or irreversibly lifted. An accelerated and evenly distributed reception of liquid media in the produced porous cell matrix by injection or marination is then possible, whereby further substances which determine the product properties can be dissolved or contained in the liquid media. The mass transport within the tissue, which has been improved due to the electroporation, can also be used for the accelerated removal of water by applying suitable driving forces such as vacuum or a corresponding concentration gradient.

L'invention concerne un procédé pour traiter des matières brutes présentant une structure cellulaire, dans l'industrie alimentaire traitant la viande, les produits carnés, le poisson, et les fruits de mer, en vue d'optimaliser et/ou de réduire les étapes de traitement. Selon l'invention, un champ électrique présentant une intensité > 0,5 kV/cm est appliqué, et de l'énergie est introduite dans le produit à structure cellulaire devant être traité, selon une limite énergétique supérieure qui permet d'exclure les effets thermiques comme étant la cause principale des modifications affectant les produits. La membrane cellulaire subit une électroporation, ce qui supprime, de manière réversible ou irréversible, la semiperméabilité de la membrane cellulaire et, par conséquent, la barrière de transport de matière entre l'intérieur de la cellule et l'environnement. Il est ensuite possible de placer des substances liquides dans la matrice cellulaire poreuse créée, de manière accélérée, selon une répartition homogène, par injection ou marinage, d'autres substances qui déterminent les propriétés du produit étant dissoutes ou contenues dans lesdites substances liquides. Le transport de masse au sein des tissus, qui est amélioré par électroporation, peut également être utilisé pour extraire de l'eau de manière accélérée, par application de forces de traction adaptées, telles qu'un vide ou un gradient de concentration correspondant.

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