The present invention relates to an elongated cooling die for an extruder, the die comprising the elongated die having an internal longitudinal channel configured to receive a stream from the extruder, the longitudinal channel having a transverse cross-section that is a continuous loop along at least a portion of the length of the die, the channel having a length and gap thickness configured to form oriented fibers from the protein component in a generally parallel orientation to produce the extruded protein product, wherein the ratio of the length of the channel to the gap thickness of the channel is between about 30:1 and about 1000:1, wherein the outer diameter of the channel is between about 200 and about 750 mm, and the gap thickness of the channel is between about 5 mm and about 30 mm, wherein the die includes one or more cooling apparatuses that cools the inner surface of the channel, and a support supporting the inner portion within the outer portion at one or more points along the length of the die.La présente invention concerne des systèmes et des procédés de production d'un produit protéique extrudé. L'invention concerne en particulier un système de production d'un produit protéique extrudé à l'aide d'un système qui comprend une matrice comportant un canal présentant une section transversale qui est une boucle continue le long d'au moins une partie de la longueur de la matrice.
