Abstract: A soy protein material containing reduced amounts of ribonucleic acids is provided. The soy protein material contains at most 4000 mg/kg of ribonucleic acids and is substantially devoid of ribonuclease enzymes.

Abstract: A method of reducing the ribonucleic acid content in a vegetable protein material is provided. A vegetable material containing protein and ribonucleic acids is treated with an enzyme preparation containing an acid phosphatase to degrade the ribonucleic acids in the vegetable protein material.

Abstract: A method is provided for purifying a vegetable protein material by removing ribonucleic acids, phytic acid, and phytates from the protein material. An aqueous slurry is formed of a vegetable protein material having a pH of from about 3 to about 6. The protein material slurry is treated with an acid phosphatase enzyme, and optionally another phytase enzyme, at a temperature and for a time effective to degrade ribonucleic acids, and optionally phytic acid and phytates, in the protein material. The enzyme treated slurry is then washed to remove the degraded materials.

Abstract: A short chain peptide material is provided containing a peptide material derived from a protein material. At least a majority of the peptides in the peptide material have a peptide chain length of 7 peptides or less. The peptide material is at least 95% soluble in an aqueous solution having a pH at which the protein material from which the peptide material is derived is insoluble. A process for forming the short chain peptide material is also provided. A slurry is formed of a protein material at a pH at which the protein material is substantially insoluble. The protein material is contacted with an enzyme having substantial endopeptidase activity and substantial exopeptidase activity at a temperature and for a time sufficient to form the peptide material of the invention.

Abstract: An exhaust flow control valve operable over high temperature ranges, comprising: a cylindrical flow housing having a cylinder axis and defining a flow passage; a valve plate pivotably mounted within the cylindrical flow housing, wherein the valve plate has a first facing surface, a second facing surface and a perimeter surface and wherein the valve plate has a pivot axis perpendicular to cylinder axis; a first seat extending radially inward from a first approximate 180 degree portion of an inner perimeter of the cylindrical flow housing, wherein the first seat forms a first partial annular surface having a substantially constant width in a radial direction over an entire arcuate length of the first seat and wherein the first seat faces a first direction parallel to the cylinder axis; a second seat extending radially inward from a second approximate 180 degree portion of the inner perimeter of the cylindrical flow housing, wherein the second seat forms a second partial annular surface having a substantially co

Abstract: The present invention relates to an enzymatically modified dietary fiber material particularly a soy fiber material of improved sensory properties including smoothness and mouthfeel characteristics. The modified fiber is formed by forming an aqueous slurry of a soy dietary fiber material and modifying or hydrolyzing the material with a process modifying dietary soy fiber and the resulting enzyme mixture which comprises a mixture of a cellulase and a carbohydrase. The degree of hydrolysis is sufficient to improve the sensory properties of the soy fiber material without substantially reducing the dietary fiber content thereof.

Abstract: An exhaust system for an internal combustion engine having a primary catalytic converter located downstream of the engine and a hydrocarbon adsorber located downstream of the primary converter. The adsorber comprises a ceramic wall-flow substrate having a zeolite coating, having the ability to selectively adsorb hydrocarbon molecules from exhaust gas, applied to the interior surfaces of the inlet passages of the substrate and a catalytic coating applied to the adjacent surfaces of the walls of the outlet passages of the substrate. The catalyst preferably has a light-off temperature below the desorption temperature of the zeolite. In operation, hydrocarbon is adsorbed by the zeolite following a cold engine start and is held until the zeolite reaches its desorption temperature at which time the hydrocarbon is released and passes through the porous walled substrate for conversion by the catalyst.

Abstract: When a preheater elevates internal combustion engine exhaust gas treatment means temperature above a threshold temperature and prior to and during engine cranking, supplemental air is provided to an internal combustion engine exhaust gas path at a controlled rate responsive to parameters indicating excess engine emission levels during an engine startup period.

Abstract: An air/fuel ratio controller for an internal combustion engine including a memory having numbers stored at locations addressed by engine operating points with the locations addressed by the engine operating points being updated during closed loop operation in accord with the value of a closed loop adjustment of the air/fuel ratio. Each memory location in the memory is updated during operation of the engine at the corresponding operating point in accord with an update time constant having a value so that the number stored tracks adjustment value producing the predetermined desired closed loop air/fuel ratio during varying values of engine temperature. The update time constant is varied directly with the value of engine temperature so that the rate of adjustment of the numbers in the memory is greater during engine warmup where engine temperature increases rapidly. The memory is used during closed loop operation to preset the closed loop adjustment at least when the engine first operates at an operating point.