Continuous shock wave food processing with shock wave...

A - Human Necessities – 23 – B

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A23B 4/015 (2006.01) A22C 9/00 (2006.01) A23B 4/00 (2006.01) A23L 3/015 (2006.01)

Patent

CA 2336476

Water and meat pieces (P) are pumped through a conduit (100), the walls of which are made of plastic having an acoustic impedance close to that of water. The conduit is immersed in a tank (400) full of water. A shock wave generator (200) (chemical explosive or capacitor discharge electrodes) creates a shock wave in the water. The shock wave passes through the conduit without substantial reflection because the impedance of the conduit wall matches the impedance of the water. The shock wave tenderizes and at least partially sterilizes the meat. A heavy-duty shock-reflective cylinder reflects portions of the shock pulse onto the conduit. Continual explosions are repeated rapidly enough that all of the meat passing through is tenderized. Alternatively, the meat is packed in water within a closed container in place of the conduit.

De l'eau et des morceaux de viande (P) sont pompés dans une canalisation (100) dont les parois sont en plastique et qui présentent une impédance acoustique proche de celle de l'eau. La canalisation est immergée dans une cuve (400) remplie d'eau. Un générateur d'ondes de choc (200) (électrodes de décharge de condensateur ou explosif chimique) crée une onde de choc dans l'eau. Cette onde de choc traverse la canalisation sans réflexion sensible car l'impédance de la paroi de la canalisation correspond à l'impédance de l'eau. L'onde de choc assure l'attendrissage de la viande et sa stérilisation partielle au moins. Un cylindre résistant de réflexion des chocs réfléchit les parties de l'impulsion de choc sur la canalisation. Des explosions continuelles sont répétées assez rapidement pour assurer l'attendrissage de la viande. Par ailleurs, il est possible également de placer la viande dans de l'eau dans un conteneur fermé à la place de la canalisation.

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