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HYDROPROCESSING OF WHEAT

  • US 3,851,085 A
  • Filed: 02/15/1973
  • Issued: 11/26/1974
  • Est. Priority Date: 06/18/1971
  • Status: Expired due to Term
First Claim
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1. A METHOD FOR HYDROPROCESSINFG WHEAT, RYE AND OATS TO SEPARATE THE ENDOSPERM FROM THE HUSK AND THE GERM TISSUES, SAID PROCESS COMPRISING THE STEPS OF:

  • (A) STEEPING 1 PART BY WEIGHT OF GRAIN SELECTED FROM THE GROUP CONSISTING OF WHEAT, RYE, AND OATS IN AT LEAST 1.5 PARTS BY WEIGHT OF AN AQUEOUS ACID STEEPING MEDIUM AT TEMPERATURES RANGING FROM ABOUT 18* C. TO ABOUT 45* C. UNTIL THE GRAIN HAS SORBED STEEPING MEDIUM EQUIVALENT TO ABOUT 56% TO ABOUT 95% BY WIEGHT OF THE GRAIN, AID STEEPING MEDIUM CONTAINING ACID IN CONCENTRATION AND QUANTITY SUFFICIENT TO MAINTAIN THE PH OF SAID STEEPING MEDIUM EXTERNAL OF THE GRAIN BETWEEN 0.8 AND 2.5 AND TO REDUCE THE INTERNAL PH OF THE HYDRATED GRAIN TO SPLIT THE HUSK AND (B) MACERATING THE HYDRATED GRAIN TO SPLIT THE HUSK AND EXPOSE THE ENDOSPERM AS A PLASTIC MASS WHILE MAINTAINING AT LEAST 90% BY WEIGHT OF THE HUSK AND THE GERM ABOVE A MINIMUM DIMENSION OF 300 MICRONS;

    (C) DISPERSING THE MACERATED GRAIN IN AN AQUEOUS DISPERSING MEDIUM TO A SOLIDS CONCENTRATION OF FROM 4% TO ABOUT 30% AND MAINTAINING THE PH OF SAID DISPERSION BETWEEN ABOUT 2.4 AND 3.4;

    THE DISPERSING SHEAR BEING SUFFICIENT TO DISENGAGE THE ENDOSPERM FROM THE HUSK AND THE GERM TISSUES;

    AND (D) SEPARATING SAID DISPERSION INTO A PARTICULATE HUSK AND GERM FRACTION AND AN ENDOSPERM DISPERSION WHILE MAINTAINING THROUGHOUT THE PROCESS SUBSTANTIALLY ALL OF THE STARCH GRANULES IN AN INTACT, UNGELATINIZED FORM AND MAINTAINING SUBSTANTIALLY ALL OF THE GLUTEN PROTEIN IN A DISPERSIBLE AND SUBSTANTIALLY UNDERNATURED STATE WITH RESPECT TO DOUGHING FUNCTION.

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