摘要:
The present invention is directed to improved preconditioners (12) especially useful for the production of high meat-content pet foods. The preconditioners (12) include an elongated housing (16) with one or more elongated, axially rotatable mixing shafts (18, 20) therein, each having a plurality of outwardly extending mixing elements (42, 44). The preconditioner ( 12) is provided with apparatus (56) for directing relatively large quantities of heated non-steam gas into the preconditioner (12) in lieu of most or all of the steam normally used with preconditioners. This serves to heat material passing through the preconditioner (12) without the addition of substantial moisture.
摘要:
The present invention is directed to improved preconditioners (12) especially useful for the production of high meat-content pet foods. The preconditioners (12) include an elongated housing (16) with one or more elongated, axially rotatable mixing shafts (18, 20) therein, each having a plurality of outwardly extending mixing elements (42, 44). The preconditioner ( 12) is provided with apparatus (56) for directing relatively large quantities of heated non-steam gas into the preconditioner (12) in lieu of most or all of the steam normally used with preconditioners. This serves to heat material passing through the preconditioner (12) without the addition of substantial moisture.
摘要:
Improved preconditioners (10) are provided for partial moisturization of human food or animal feed ingredients prior to downstream final processing thereof in an extruder (56) or pellet mill. The preconditioner (10) preferably includes an elongated housing (12) having a wall (14) with an inlet (20) and an opposed outlet (22). The housing (12) also has a larger diameter end wall (16) proximal to the inlet (20), a smaller diameter end wall (18) proximal to outlet (22), and a progressively converging housing wall (14) with a taper angle of from about 2-9. A shaft (36) extends along the length of housing (14) and supports a plurality of outwardly extending mixing elements (46) positioned in axially and circumferentially spaced relationship along the length of the shaft (36). The outer margins (54) of the mixing elements (46) cooperatively define a taper along the length of the housing wall (14). The shaft (36) is designed to operate at high rotational speeds, and the mixing elements (46) may be selectively angularly oriented to retard or increase the flow rate of materials through the preconditioner(10). The simplified preconditioner (10) is operable to provide high degrees of moisturization and precooking.
摘要:
An extruder system (10, 124) for the processing of feed materials is provided including an extruder (12), adjustable back pressure valve assembly (14) and a superatmospheric post-extrusion product treatment assembly (16, 124). The back pressure valve assembly (14) includes an adjustable valve member (48) which can be shifted to alter the effective cross-sectional open area of a product passageway (36), and alternately can be shifted to a product diverting position wherein the product is diverted from downstream processing. The treatment assembly (16) includes a sealed housing (78) directly coupled to the assembly (14) so that product emerging from the assembly (14) passes into housing (78) without experiencing atmospheric pressure. The treatment assembly (124) includes a product-guiding cowlijng (128) which is open to the atmosphere, together with a sealed housing (134) for effecting above atmospheric pressure treatment of extruded product.
摘要:
The present invention relates to purified compositions of enteroviruses, pharmaceutical compositions thereof and a glutathione affinity chromatography process for the purification of enteroviruses.
摘要:
The present invention relates to a scalable process for the purification of human cytomegalovirus particles from cell culture medium. In particular, the process involves a two step chromatography process starting with an anion exchange chromatography step followed by a polishing chromatography step selected from mixed mode chromatography or cation exchange chromatography.
摘要:
An improved, dual-shaft preconditioner (10, 70, 102) is provided having independent drive mechanism ( 18, 20, 78, 80) operatively coupled with a corresponding preconditioner shaft (14, 16, 74, 76, 106, 108) and permitting selective rotation ofthe shafts (14, 16, 74, 76, 106, 108) at rotational speeds and directions independent of each other. Preferably, the speed differential between the shafts (14, 16, 74, 76, 106, 108) is at least about 5:1. The mechanisms (18, 20, 78, 80) are operatively coupled with a digital control device (60) to allow rotational speed and direction control. Preferably, the preconditioner (10, 70, 102) is supported on load cells (62, 100) also coupled with control device (60) to permit on-the-go changes in material retention time within the preconditioner (10, 70, 102). The preconditioner (10, 70, 102) is particularly useful for the preconditioning and partial gelatinization of starch-bearing feed or food materials, to an extent to achieve at least about 50% cook in the preconditioned feed or food materials.
摘要:
An extruder system (10, 124) for the processing of feed materials is provided including an extruder (12), adjustable back pressure valve assembly (14) and a superatmospheric post-extrusion product treatment assembly (16, 124). The back pressure valve assembly (14) includes an adjustable valve member (48) which can be shifted to alter the effective cross-sectional open area of a product passageway (36), and alternately can be shifted to a product diverting position wherein the product is diverted from downstream processing. The treatment assembly (16) includes a sealed housing (78) directly coupled to the assembly (14) so that product emerging from the assembly (14) passes into housing (78) without experiencing atmospheric pressure. The treatment assembly (124) includes a product-guiding cowlijng (128) which is open to the atmosphere, together with a sealed housing (134) for effecting above atmospheric pressure treatment of extruded product.
摘要:
Improved preconditioners (10) are provided for partial moisturization of human food or animal feed ingredients prior to downstream final processing thereof in an extruder (56) or pellet mill. The preconditioner (10) preferably includes an elongated housing (12) having a wall (14) with an inlet (20) and an opposed outlet (22). The housing (12) also has a larger diameter end wall (16) proximal to the inlet (20), a smaller diameter end wall (18) proximal to outlet (22), and a progressively converging housing wall (14) with a taper angle of from about 2-9. A shaft (36) extends along the length of housing (14) and supports a plurality of outwardly extending mixing elements (46) positioned in axially and circumferentially spaced relationship along the length of the shaft (36). The outer margins (54) of the mixing elements (46) cooperatively define a taper along the length of the housing wall (14). The shaft (36) is designed to operate at high rotational speeds, and the mixing elements (46) may be selectively angularly oriented to retard or increase the flow rate of materials through the preconditioner(10). The simplified preconditioner (10) is operable to provide high degrees of moisturization and precooking.
摘要:
An improved, dual-shaft preconditioner (10, 70, 102) is provided having independent drive mechanism ( 18, 20, 78, 80) operatively coupled with a corresponding preconditioner shaft (14, 16, 74, 76, 106, 108) and permitting selective rotation ofthe shafts (14, 16, 74, 76, 106, 108) at rotational speeds and directions independent of each other. Preferably, the speed differential between the shafts (14, 16, 74, 76, 106, 108) is at least about 5:1. The mechanisms (18, 20, 78, 80) are operatively coupled with a digital control device (60) to allow rotational speed and direction control. Preferably, the preconditioner (10, 70, 102) is supported on load cells (62, 100) also coupled with control device (60) to permit on-the-go changes in material retention time within the preconditioner (10, 70, 102). The preconditioner (10, 70, 102) is particularly useful for the preconditioning and partial gelatinization of starch-bearing feed or food materials, to an extent to achieve at least about 50% cook in the preconditioned feed or food materials.