Chemical Patents (Class 127/70)
  • Patent number: 4761185
    Abstract: The present invention relates to a process for continuous conversion of starch or starch containing materials into hydrolysates such as dextrins, higher sugars, maltose or dextrose. It provides for an extremely fast heating of an acidified or non acidified slurry by spraying it very finely into a chamber containing steam under pressure. The fast heating rate combined with the high operating temperature allow processing times of less than 20 seconds, usually between 1 and 4 seconds during which the starch is converted into the desired hydrolysate without passing through the classical "gelatinized" or "pasted" state. The desired product can be custom tailored from dextrins to glucose, in high yield and low level of degradation products. Moreover, the dextrins so produced have a very uniform molecular weight and the process can handle purified as well as impure starch such as ground corn, cassava and deteriorated harvests.
    Type: Grant
    Filed: November 14, 1986
    Date of Patent: August 2, 1988
    Assignee: Universite de Sherbrooke
    Inventors: Esteban Chornet, Paulo G. Koeberle, Ralph Overend
  • Patent number: 4761186
    Abstract: Aqueous slurries of physically and/or chemically modified starch solids, having high starch solids levels, are purified by means of ultrafiltration. An ultrafiltration system is started by circulating water and then the modified starch slurry is added to raise the starch solids level of the stream fed to the ultrafiltration unit to between 20 and 32% by weight. Water is added to the ultrafiltration system, preferably at the same rate at which water is removed from the system in the permeate. After the desired level of purification is achieved the slurry is concentrated to above 35% and then dried.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: August 2, 1988
    Assignee: General Foods Corporation
    Inventors: Robert E. Schara, Jay H. Katcher
  • Patent number: 4579944
    Abstract: Production of starch derivatives by reacting a starch derivatizing agent with chemically-mechanically gelatinized starch.
    Type: Grant
    Filed: March 22, 1985
    Date of Patent: April 1, 1986
    Assignee: Grain Processing Corporation
    Inventors: Richard D. Harvey, Roger E. McPherson
  • Patent number: 4566909
    Abstract: Certain yam starches hydrolyzed in the presence of insoluble metal salts formed in situ are surprisingly effective flocculants for destabilizing dilute as well as thick sludge suspensions and are particularly effective when used in the treatment of bituminous tar sands tailings and in phosphate slimes.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: January 28, 1986
    Assignee: Suncor, Inc.
    Inventors: Raymond N. Yong, Amar J. Sethi
  • Patent number: 4566910
    Abstract: Starch phosphates are prepared by reacting with an alkaline starch paste while maintaining an alkaline pH a phosphate salt at a temperature of about 45.degree. to 95.degree. C. for a period of not more than about 120 minutes. Amphoteric starch phosphates are prepared by also reacting with the starch paste a cationizing agent.
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: January 28, 1986
    Assignee: Grain Processing Corporation
    Inventors: E. Daniel Hubbard, Richard D. Harvey, Mark L. Hogen
  • Patent number: 4564004
    Abstract: Cassava starch hydrolyzed in the presence of insoluble metal salts formed in situ is a surprisingly effective flocculant for destabilizing dilute as well as thick sludge suspensions and is particularly effective when used in the treatment of bituminous tar sands tailings and in phosphate slimes.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: January 14, 1986
    Assignee: Suncor, Inc.
    Inventors: Raymond N. Yong, Amar J. Sethi
  • Patent number: 4562086
    Abstract: A modified non-waxy starch, the processes for making such starch and the salad dressing produced from the modified starch. The modified starch is etherified with an alkylene oxide to a degree of substitution between about 2 to about 3.5% and in a second step is cross-linked with not more than 0.1% cross-linking agent. The modified starch has a shear resistance of about 40 to about 80%, shear resilience of about 70 to about 100% and a gel strength of about 5.0 to about 32.0 ml.
    Type: Grant
    Filed: February 6, 1984
    Date of Patent: December 31, 1985
    Assignee: American Maize-Products Company
    Inventors: George E. Smolka, Richard J. Alexander
  • Patent number: 4560416
    Abstract: Dasheen starch hydrolyzed in the presence of insoluble metal salts formed in situ is a surprisingly effective flocculant for destabilizing dilute as well as thick sludge suspensions and is particularly effective when used in the treatment of bituminous tar sands tailings and in phosphate slimes.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: December 24, 1985
    Assignee: Suncor, Inc.
    Inventors: Raymond N. Yong, Amar J. Sethi
  • Patent number: 4549909
    Abstract: The present invention relates to a process and the product resulting from pretreating corn starch with calcium or sodium hypochlorite in a controlled manner wherein the starch in aqueous slurry at about 90.degree. to about 115.degree. F. is contacted with from about 0.1 to 6.0% chlorine based on the weight of starch to tenderize the starch which is thereafter filtered, washed, dried and dextrinized in conventional manner to produce dextrins having excellent clarity, luster and stability in aqueous solutions containing at least 30% by weight of solids.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: October 29, 1985
    Assignee: American Maize-Products Company
    Inventors: Raj K. Samuel, Ronald J. Kozlowski, Frank J. Pustek
  • Patent number: 4517022
    Abstract: Dehulled and degermed dry-milled corn products are refined by mixing for a period of not more than 4 hours at ambient temperature dehulled and degermed corn containing starch and protein with water to form an aqueous slurry, treating the slurry with alkali, and subjecting the alkali containing slurry to high intensity mixing. Sodium sulfite may be present in the alkali containing slurry. A high-quality starch then is recovered.
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: May 14, 1985
    Assignee: Grain Processing Corporation
    Inventor: Richard D. Harvey
  • Patent number: 4508627
    Abstract: A process for making an improved starch flocculant by heating an aqueous dispersion comprising about 4 to about 12% starch solids, lime and alum until maximum vicosity is obtained, adding a metal salt and finally effecting hydrolysis by additional heating.
    Type: Grant
    Filed: September 15, 1983
    Date of Patent: April 2, 1985
    Assignee: Suncor, Inc.
    Inventors: Raymond N. Yong, Amar J. Sethi
  • Patent number: 4477480
    Abstract: A method of modifying cereal starches to produce a clean, odor-free and without off-taste starch that does not develop objectional characteristics during storage. The modification process comprises an alkali treatment of the starch.
    Type: Grant
    Filed: July 6, 1982
    Date of Patent: October 16, 1984
    Assignee: General Foods Corporation
    Inventors: William C. Seidel, George E. Orozovich, Darrell G. Medcalf
  • Patent number: 4440792
    Abstract: The "livering" or gelling of corn steep liquor or liquid products containing corn steep liquor is prevented or reversed by the addition of an effective amount of a calcium complexing agent, preferably at a pH of less than about 3.8.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: April 3, 1984
    Assignee: A. E. Staley Manufacturing Company
    Inventors: Marion M. Bradford, Frank T. Orthoefer, Kenneth N. Wright
  • Patent number: 4428972
    Abstract: A thickener is prepared comprising water and a waxy starch from a selected plant of a wxsu2 genotype, the sol of which starch exhibits superior resistance to breakdown on storage at low temperatures. The starch may optionally be modified. The thickener, which preferably employs a starch extracted from maize, is particularly useful for food applications.
    Type: Grant
    Filed: October 23, 1981
    Date of Patent: January 31, 1984
    Assignee: National Starch and Chemical Corporation
    Inventors: Otto B. Wurzburg, Virgil L. Fergason
  • Patent number: 4393202
    Abstract: The production rate and yield resulting from the dewatering of starch conversion products containing swollen starch granules resulting from treatments with cationic reagents is improved by the addition to the starch slurry of a water soluble anionic polymer.
    Type: Grant
    Filed: August 17, 1982
    Date of Patent: July 12, 1983
    Assignee: National Starch and Chemical Corporation
    Inventor: William F. Breuninger
  • Patent number: 4368212
    Abstract: A bland-tasting starch is prepared by stirring a starch having a distinct cereal or root taste in aqueous slurry form with an acid at about pH 3-5 for at least about 25 minutes, adding an alkaline earth metal oxide to a pH of 5.5 to 8 and stirring, and thereafter filtering the slurry and drying the starch. In a preferred aspect the acid is sulfuric acid, the oxide is calcium or magnesium oxide and the starch is waxy maize. When the starch is dried by drum-drying, a pregelatinized starch is obtained. The resulting starch will not adversely affect the taste of foodstuffs to which it is added.
    Type: Grant
    Filed: December 16, 1981
    Date of Patent: January 11, 1983
    Assignee: National Starch and Chemical Corporation
    Inventor: Erwin Heckman
  • Patent number: 4345948
    Abstract: The production rate and yield resulting from the washing of starch conversion products containing swollen starch granules is improved by the addition to the wash water of 0.1 to 1% by weight, based on starch solids, of a cationic polymer which is a water-soluble acid salt of an aminoalkyl ester of a carboxylic acid polymer.
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: August 24, 1982
    Assignee: National Starch and Chemical Corporation
    Inventor: William F. Breuninger
  • Patent number: 4302475
    Abstract: A method of producing milo starch which comprises the steps of immersing refined milo in a weakly acidic solution of sodium chlorite to remove the tannin, grinding the same to provide a starch slurry, and removing the proteins from the latter. The method is capable of producing milo starch of high purity at low cost without causing odor pollution.A method of producing milo starch includes, besides the steps described above, the steps of lactic-fermenting the waste liquid resulting from the immersion of white grain milo, concentrating the liquid, mixing the concentrated liquid with the bran resulting from the refining of milo, and drying the mixture to provide milo feed. By this method, it is possible to produce milo starch without having to provide any special equipment for treating the waste water.
    Type: Grant
    Filed: June 19, 1980
    Date of Patent: November 24, 1981
    Assignee: Bohsei Enterprise, Ltd.
    Inventor: Motoichi Shigehiro
  • Patent number: 4289540
    Abstract: Hydrolyzed wheat, corn, and potato starches are effective flocculants in destabilizing dilute as well as thick sludge suspensions. These starches are equal to, or better than, the synthetic polyacrylamide flocculants in destabilizing sludge suspensions, particularly when used in the treatment of bituminous tar sands tailings.The hydrolyzed wheat starch is especially effective when first contacted with metal salts such as salts containing calcium, aluminum and phosphate ions and most particularly when first treated with a combination of such salts formed in situ, and a lower aliphatic alcohol.Among the potato starch flocculants which were found to be generally better than the corn starch flocculants, those containing AlPO.sub.4 were the best. Potato starch flocculants are equally effective on oil-removed and no-oil-removed sludge suspensions.
    Type: Grant
    Filed: August 17, 1978
    Date of Patent: September 15, 1981
    Assignee: Suncor Inc.
    Inventors: Raymond N. Yong, Amar J. Sethi
  • Patent number: 4280851
    Abstract: A process and apparatus is provided for cooking or gelatinizng a material in an atomized state, so that there is obtained an easily dryable, uniform and finely-sized product. The material which is to be cooked is injected through an atomization aperture in a nozzle assembly to form a relatively finely-sized spray. A heating medium is also injected through an aperture in the nozzle assembly into the spray of atomized material so as to heat the material to a temperature effective to cook or gelatinize the material. An enclosed chamber surrounds the atomization and heating medium injection apertures, and defines a vent aperture positioned to enable the heated spray of material to exit the chamber. The arrangement is such that the elapsed time between passage of the spray of material through the chamber, i.e., from the atomization aperture and through the vent aperture, defines the cooking or gelatinization time of the material.
    Type: Grant
    Filed: December 14, 1979
    Date of Patent: July 28, 1981
    Assignee: General Foods Corporation
    Inventors: Esra Pitchon, Joseph D. O'Rourke, Theodore H. Joseph
  • Patent number: 4266027
    Abstract: An aqueous starch slurry is initially hydrolyzed in the presence of acid or enzyme and thereafter, the liquefied starch is saccharified in the presence of an acid cationic exchange resin to provide a sterile aqueous solution containing at least about 60 weight percent fermentable sugar based on the weight of the original starch present.
    Type: Grant
    Filed: March 12, 1980
    Date of Patent: May 5, 1981
    Assignee: National Distillers and Chemical Corp.
    Inventors: Werner C. Muller, Franklyn D. Miller
  • Patent number: 4120982
    Abstract: A thin-thick, hydroxypropylated, epichlorohydrin crosslinked tapioca-based starch derivative for continuous process pressure cooking of acid food systems. The degree of crosslinking of this starch derivative is carefully controlled so that it is initially low in viscosity and develops full viscosity only under high pressure and temperatures. These characteristics make this starch derivative ideally suited for use in recently developed acid medium, food canning processes in which initial rapid heat penetration without degrading the starch derivative is necessary for the heat sterilization of the canned foods. For the new continuous retort processing, the usual time allowed for the complete retorting cycle is less than twenty minutes, and this must include heat sterilization. As the retort medium using the starch derivative of the invention reaches the heat sterilization temperature, it then increases in viscosity to a range which retains the canned food product in a desirable suspension.
    Type: Grant
    Filed: September 22, 1975
    Date of Patent: October 17, 1978
    Assignee: A. E. Staley Manufacturing Company
    Inventors: James E. Eastman, Frank DEL Valle
  • Patent number: 4120983
    Abstract: Thin-thick, hydroxypropylated, epichlorohydrin cross-linked starch derivatives for continuous process pressure cooking of neutral or acid food systems. The degree of cross-linking for these starch derivatives is carefully controlled so that they are initially low in viscosity and develop full viscosity only under high pressure and temperatures. These characteristics make these starches ideally suited for use in recently developed food canning processes in which initial rapid heat penetration without degrading the starch derivative is necessary for the heat sterilization of the canned foods. For the new continuous retort processing, the usual time allowed for the complete retorting cycle is less than twenty minutes, and this must include heat sterilization. As the retort media using the starch derivative of the invention reaches the heat sterilization temperature it then increases in viscosity to a range which retains the canned food product in a desirable suspension.
    Type: Grant
    Filed: September 22, 1975
    Date of Patent: October 17, 1978
    Assignee: A. E. Staley Manufacturing Company
    Inventors: Frank DEL Valle, John V. Tuschhoff, Charles E. Streaty
  • Patent number: 4040862
    Abstract: Process for preparing a thermal converting starch by reacting an alkaline hypochlorite oxidized starch with a water soluble aluminum salt. The treatment provides a starch product which when pasted at high temperatures will degrade to give a low viscosity material. The process includes the steps of slurrying oxidized starch in water and treating the oxidized starch with a water soluble aluminum salt.
    Type: Grant
    Filed: July 2, 1976
    Date of Patent: August 9, 1977
    Assignee: Anheuser-Busch, Incorporated
    Inventors: John E. Voigt, Edward M. Bovier
  • Patent number: 4029516
    Abstract: A multi-step process for producing soluble amylose involving the dissolution and dissociation of amylose in a first organic solvent, the hydrolyzation of amylose into lower molecular weight components, and the use of a second organic solvent to form a precipitate.
    Type: Grant
    Filed: April 9, 1976
    Date of Patent: June 14, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Thomas John Pankratz
  • Patent number: 4009291
    Abstract: A starch composition having lower hydroscopicity, lower bulk-density and better film-forming and holding properties than low D.E. dextrins comprising granule starches which have been hydrolyged to a D.E. of less than about 1 with little or no reducing sugars being present while retaining their granule structure and have thereafter been gelatinized.
    Type: Grant
    Filed: March 25, 1974
    Date of Patent: February 22, 1977
    Assignee: General Foods Corporation
    Inventors: William A. Mitchell, William C. Seidel, George E. Orozovich
  • Patent number: 3996061
    Abstract: Large diameter legume starch granules including starches derived from yellow field pea, Pisum sativum (var) and faba bean, Vicia faba L. (Leguminosae) which have been treated to remove protein and fiber, and to improve color are used to replace scarce arrowroot starch granules as a protective stilt material in microencapsulated coatings, including carbonless copy paper. The "stilt" material is used to prevent premature rupture of the microcapsules and early release of the microencapsulated materials. It has been discovered that the natural granule size, and other granule properties of the yellow field pea and faba bean starches are ideally suited to replace arrowroot starch granules as a protective material when the naturally occurring protein and fiber have been removed, and the color improved.
    Type: Grant
    Filed: July 2, 1975
    Date of Patent: December 7, 1976
    Assignee: A. E. Staley Manufacturing Company
    Inventor: Donald L. Johnson
  • Patent number: 3996060
    Abstract: Large diameter starch granules derived from yellow field pea, Pisum sativum (var) and faba bean, Vicia faba L. (Leguminosae) are used to replace scarce arrowroot starch granules as a protective stilt material in microencapsulated coatings, including carbonless copy paper. The "stilt" material is used to prevent premature rupture of the microcapsules and early release of the microencapsulated materials. It has been discovered that the natural granule size, and other granule properties of the yellow field pea and faba bean starches are ideally suited to replace arrowroot starch granules as a protective material. In certain coating processes in which the temperature at the coated surface exceeds the normal pasting temperature of these starch granules, the pasting temperature of the granules can be raised by a crosslinking reaction under temperature and pH conditions to preserve the granular structure of the starch particles.
    Type: Grant
    Filed: June 10, 1974
    Date of Patent: December 7, 1976
    Assignee: A. E. Staley Manufacturing Company
    Inventor: Donald L. Johnson
  • Patent number: 3977897
    Abstract: A non-chemically inhibited starch is prepared by controlled heating at a specified pH of an aqueous suspension of an amylose-containing starch in intact granule form and an inorganic salt effective in raising the gelatinization temperature of the starch.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: August 31, 1976
    Assignee: National Starch and Chemical Corporation
    Inventors: Otto B. Wurzburg, Leo H. Kruger
  • Patent number: 3975206
    Abstract: An improved method for thinning starch in the granular state employing hydrogen peroxide and metal ion catalysts in an aqueous suspension, free of buffer additions. The thinning action proceeds in acid pH to the desired viscosity level, and is stopped by the addition of sodium metabisulfite, or other reducing agent to remove residual hydrogen peroxide. The aqueous suspension is then neutralized, and the usual purifying and drying steps are effected on the granular product.
    Type: Grant
    Filed: November 18, 1974
    Date of Patent: August 17, 1976
    Assignee: A. E. Staley Manufacturing Company
    Inventors: James A. Lotzgesell, Kenneth B. Moser, Thomas L. Hurst
  • Patent number: 3973985
    Abstract: Starch is prepared for use in the manufacture of paper products by reacting an alkaline hypochlorite oxidized starch with ammonium persulfate. The treatment provides a starch product which when pasted at high temperatures will degrade to give a low viscosity material. The process includes the steps of slurrying lightly oxidized starch in water and further oxidizing the starch with ammonium persulfate. When this starch is suspended in water and heated to pasting, it shows lower viscosities than other starches of comparable starting viscosities.
    Type: Grant
    Filed: June 3, 1974
    Date of Patent: August 10, 1976
    Assignee: Anheuser-Busch, Incorporated
    Inventors: John E. Voigt, Edward M. Bovier
  • Patent number: 3943000
    Abstract: The further modification of acid modified flours and starches by reacting such acid modified flours, at a pH of less than about 3.0 with an alkylene oxide, preferably ethylene oxide, in order to scavenge residual acidity, raise the pH of the product and partially crosslink it. The thus created new crosslinked product is useful in gypsum wall board core binders and other applications.
    Type: Grant
    Filed: June 7, 1974
    Date of Patent: March 9, 1976
    Inventor: Peter J. Ferrara