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    • 17. 发明公开
    • LOW ENERGY RENDERING PROCESS.
    • 具有低能源成本的提取工艺。
    • EP0064056A4
    • 1983-03-23
    • EP81901420
    • 1981-03-18
    • DARLING DELAWARE CO
    • WOJCIK HERBERT W
    • A23J1/00A23J1/10A23L20060101A23L13/00C09H1/00C09H3/00C11B20060101C11B1/00C11B1/06A23L1/31
    • C11B1/00A23J1/002A23J1/10C09H3/00C11B1/06
    • Integrated continuous low energy rendering process for preparing stabilized fat, low density protein material and high density protein material from raw organic material containing fat, soft low density protein tissue material, and bone or other high density protein material. The raw organic material is fed continuously without heating or finely grinding into a screw-type press mounted within a cage through which a large portion of the soft low density protein material and fat are extruded separately from the high density protein material. The extruded soft low density protein material and fat in the form of an aqueous fatty slurry are subjected to moderate heating followed by centrifuging to separate most of the fat in the form of crude fat from the slurry. The crude fat separated from the slurry is subjected to centrifuging or evaporation and filtering to remove water and suspended solids to provide clear high quality fat product. The low density protein material from the centrifuge is mixed with the high density protein material retained within the press, and the mixture is heated to effect crisping and drying to a low moisture content and sized to within a selected particle size range to provide a low fat protein meal material. Where the protein material retained within the press contains a large amount of bone, the dry mixture is subjected to a dry gravity separation treatment to provide low fat high density protein material suitable for making high quality gelatin.