Removing Caffein Or Tannin Patents (Class 426/427)
  • Patent number: 4081561
    Abstract: A low-grade roasted coffee fraction is extracted with water in manner sufficient to remove at least 75% of the caffeine contained therein while retaining a major amount of the soluble solids. Volatiles are stripped from the resulting extract and condensed. Thereafter the low grade fraction is thoroughly extracted with an aqueous extraction medium and this extract is combined, either before or after drying, with a fully caffeinated water extract of a high-grade coffee fraction and with condensed volatiles from the stripping operation. A partially decaffeinated soluble coffee having desirable flavor and aroma may be obtained.
    Type: Grant
    Filed: April 13, 1976
    Date of Patent: March 28, 1978
    Assignee: General Foods Corporation
    Inventors: Franklyn Wallace Meyer, Esra Pitchon, Ernest Lord Earle, Jr.
  • Patent number: 4044162
    Abstract: The flavor and aroma of decaffeinated coffee is made to more closely resemble that of undecaffeinated coffee by virtue of a process involving contacting green coffee with sucrose.
    Type: Grant
    Filed: November 14, 1973
    Date of Patent: August 23, 1977
    Assignee: General Foods Corporation
    Inventors: Frank Lando, Charles Leonard Teitelbaum
  • Patent number: 4031251
    Abstract: A process is disclosed wherein the decaffeination of aqueous extracts of vegetable material with non-ionic, hydrophobic resin may be performed in a continuous manner. In accordance therewith, extract is contacted with resin to effect decaffeination, exhausted resin containing adherent caffeine and non-caffeine water solubles is bleached with water to remove the caffeine, the caffeine-free resin is then washed with a solution comprising water and an organic solvent to elute non-caffeine water solubles and then the resin is rinsed with water to permit its reuse in the further decaffeination of vegetable material extracts.
    Type: Grant
    Filed: January 8, 1975
    Date of Patent: June 21, 1977
    Assignee: Societe d'Assistance Technique pour Produits Nestle S.A.
    Inventors: Geoffrey Margolis, Dean Frederick Rushmore, Richard Tien-Szu Liu
  • Patent number: 3989850
    Abstract: Decaffeinated coffee of improved quality is achieved using a process wherein caffeine-containing green coffee is countercurrently extracted with a water solution of coffee solubles. The decaffeinated coffee removed from the extraction zone is treated to remove surface solids contained thereon and is then dried at temperatures not in excess of 200.degree. F. The critical combination of a specified lower limit of surface solids on the coffee prior to drying and the drying temperature has been found to result in a decaffeinated coffee product of improved flavor.
    Type: Grant
    Filed: December 13, 1974
    Date of Patent: November 2, 1976
    Assignee: General Foods Corporation
    Inventors: William W. Erb, William J. Einstman, Gary V. Jones, George A. McGregor
  • Patent number: 3989849
    Abstract: Improved flavor of commercially decaffeinated coffee is accomplished by rapidly drying the wet decaffeinated beans with radio frequency heating the thermal and radio frequency energies required and the wavelength and duration of exposure to the same being sufficient to impart a porous structure to the bean without rupturing the same.
    Type: Grant
    Filed: March 23, 1973
    Date of Patent: November 2, 1976
    Assignee: General Foods Corporation
    Inventors: Harvey P. Fogel, Irving Holzberg
  • Patent number: 3985905
    Abstract: The flavor and aroma of decaffeinated roasted and ground coffee is significantly improved employing a process whereby caffeine-containing green coffee material is initially contacted with water in a washing step at conditions which will not extract a significant amount of soluble materials from the coffee material. The aqueous solution obtained from the initial processing step is subsequently contacted with a decaffeinated coffee material.
    Type: Grant
    Filed: June 24, 1974
    Date of Patent: October 12, 1976
    Assignee: General Foods Corporation
    Inventors: Richard P. Scelia, Kenneth W. Fagan, Michael G. Protomastro