Campbell Soup Company

Murray T Hundt

William M Hildebolt

Robert E Small

A bland protein product having a texture and mouth feel simulating animal meat is prepared from a dough-like mixture of proteinaceous material and water. The proteinaceous material can comprise relatively low protein content blends or even single ingredients such as soy flour. The process comprises continuously extruding the protein dough in the form of a relatively thin sheet of semi-rigid protein material into a first confined treating zone while simultaneously subjecting the thin sheet in the extrusion die to externally applied heat to texturize both surfaces of the sheet before it enters into the first confined zone. A stream of heated gas and condensables is introduced into the first confined zone to buoy up, flex and help propel the sheet of surface - texturized protein through the confined zone where additional texturization takes place. The sheet then is cut into segments by rotating longitudinal knife edges against a stationary straight edge and the segments are conveyed through a second confined zone where final texturizing takes place. Finally, the protein segments are passed through a suitable back pressure means at the end of the second confined zone, and recovered in usable form. Apparatus for performing this process is also disclosed.

Protein texturization

A bland protein product comprising large diceable chunks of texturized protein having a texture and mouth feel simulating animal meat is prepared by forming an aqueous slurry containing 40 to 50% of a protein material having a protein content of at least 70% on a solids basis, injecting steam into the slurry to propel it through a cooking tube containing a restriction means, passing the protein material through a pressure letdown pump at the discharge end of the cooking tube, and recovering the textured product in a collection zone. The injection steam pressure is chosen to maintain a product temperature of 310.degree. to 350.degree. F. and a back pressure of about 60 to 80 psi in the cooking tube. The protein material also may be subjected to further texturizing treatments after the pressure letdown pump. The process is particularly useful in the co-texturization of meat and vegetable protein mixtures. Apparatus for performing this process is also disclosed.

Protein texturization by steam injection

A bland protein product having a texture and mouth feel simulating animal meat is prepared from a dough-like mixture of proteinaceous material and water. The proteinaceous material can comprise relatively low protein content blends or even single ingredients such as soy flour. The process comprises continuously extruding the protein dough in the form of a relatively thin sheet of semi-rigid protein material into a confined treating zone while simultaneously subjecting the thin sheet in the extrusion die to externally applied heat to texturize both surfaces of the sheet before it enters into the confined zone. In the confined zone a stream of heated gas is directed at the thin sheet of surface-texturized protein to break off the leading segment of the sheet and further to propel the segments through the confined zone where additional texturization takes place. Finally, the protein segments are passed through a back pressure means at the end of the confined zone, and recovered in usable form. Apparatus for performing this process is also disclosed.

A bland protein product comprising large diceable chunks of texturized protein having a texture and mouth feel simulating animal meat is prepared by forming an aqueous slurry containing 40 to 50% of a protein material having a protein content of at least 70% on a solids basis, injecting steam into the slurry to propel it through a cooking tube containing a restriction means, passing the protein material through a pressure letdown pump at the discharge end of the cooking tube, and recovering the textured product in a collection zone. The injection steam pressure is chosen to maintain a product temperature of 310.degree. to 350.degree.F. and a back pressure of about 60 to 80 psi in the cooking tube. The protein material also may be subjected to further texturizing treatments after the pressure letdown pump. The process is particularly useful in the co-texturization of meat and vegetable protein mixtures. Apparatus for performing this process is also disclosed.

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Maple Shade, NJ, United States of America

Murray T Hundt